Since this is the true wave of DLC mons to arrive in NU, I felt it worth to write out some thoughts before the few weeks of voting start and the meta truly takes shape. So here goes (no specific order, just sorta sub sections as I went along).

After months of
begging for a special fire, NU has been gifted Ninetales! This is probably the drop I'm happiest about, as I have no fear that it's by any means broken, but I'm confident that it will surface as a top meta pick. Ninetales has great speed which inches past the Silvallys, Basculin, and non-scarf Haunter and Togedemaru (where wish toge is probably going to pick up some popularity now). It also has access to Nasty Plot and despite the loss of Drought and resulting inability to use solar beam, it can fall back on Energy ball to work through usual fire checks in Gastro, Jelli and Quag. Scorching Sands is a cool option for opposing Ninetales/Rapidash and also being able to touch Drampa, but Substitute is surfacing as a great 4th slot for setting up on slow passive resisted mons like Clefairy. Additionally, Ninetales has appreciable special bulk and can act as a soft check to other threats that came with the shift that are otherwise difficult to deal with like Specs Ribombee/Whismicott and Frosmoth. Overall I'm
stoked happy about this fire's arrival in NU and see it becoming an important mon to be aware of.

Cinccino brings good speed and a versatile movepool to abuse skill link with, along with good team-assisting offensive moves like U-Turn and Knock off, but lacks high power without band and still can't touch steels. Although it can break through physical checks with coverage such as Rhydon with bullet seed, I forsee Cincinno running into issues due to the tier regaining Steelvally and probably increasing reliance on Stunfisk-G, and Magneton to check Duraludons. As well Mudsdale's arrival in NU doesn't help Cincinno's case as it can switch in to even supereffective multi-hit moves and rack up defense boosts from stamina, threatening back with Body Press. Seems overall like a middle of the pack mon.

Amazing power coming from this cannon, and with Thwackey being a common pick that allows Terrain Pulse to hit a disturbing total power of 195, it will have an easy time blasting bulky water switchins. It's cool that it gets flip turn but the shift brought more water absorbers like Gastro and Jelli so hard to say whether Claw will make great use of it. A mid viable mon if I had to guess.

as cool as electric terrain became in RU with an abuser like Raichu-Alola (before it was banned), my inclination is to say that it won't be quite the same in NU. Psychic terrain is a no go here and Grassy Terrain is at least somewhat common. Although Pincurchin itself is a cool mon that can abuse the terrain a bit, we lack other abusers outside of Jolteon who is sadly never as good as anyone wishes, and the drop we just got in Galvantula, who already has Thunder to abuse without worrying about setting terrain. There may be some gimmicky use of this but without something that has the insane speed and coverage that Raichu-A had, I doubt we'll see much of this mon.

I think this mon will be a solid A mon. It looks to be really versatile, able to set spikes or SR and rapid spin as well, and having a speed tier where the speed boost can come in handy is nice. As well it has good physical defense and offense, and Despite 4x weaknesses to fighting and fire, Ice/Steel grants most of the useful resistances of steel type, and gives a useful dual STAB to check and threaten many mons that just dropped down on us like Ribombee, Whimsicott and Frosmoth. Top all this off with access to Swords Dance and Slush Rush, and remembering that we have not 1 but 2 (for now) Hail Setters in the tier, Alolaslash has good potential as a sweeper as well.

Sableye is just a great pokemon, with prankster encore/willowisp and recover, and only a weakness in fairy, it was one of the most consistently annoying mons in RU to deal with. The issue for it here is that it came alongside a few powerful Fairies, and into a tier where we have some popular dark type threats that it can't really do anything to at all due to prankster, namely Silvally-Dark, Persian Alola and Skuntank. I'm sure it will still see some use and you bet you'll be getting burned by this little rascal at some point, but I don't think it will be as rampant here as it was in RU before.
Ok now for the big groups...

,

,

- The "
Dragon Nukes" as they've been dubbed...
Duraludon has Insane breaking power with Draco Meteor, Flash Cannon coverage for fairies and thunderbolt/dark pulse as coverage picks. Decent speed lets timid tie with Toxicroak and Sawk and sets it apart offensively from the other two dragon nukes. Specs is going to be the most threatening set with limited switch ins, while Iron defense+ body press will probably be a popular choice for those who want to deal instant damage to stunfisk-G, magneton and other steel switch-ins. Duralu also can function as a great suicide lead with rocks and a massive Steel Beam to fire off.
Exeggutor-Alola, having 2 super high power options in Draco Meteor and Leaf Storm is incredibly hard to switch into, and has options for common would-be defensive counterplay like Ferroseed with Fire coverage. While some of these offensive points set it apart from Duraludon in some way, Grass/Dragon is a typing that gives a lot of weaknesses like to Common moves like U-Turn, Ice moves, and Poison moves from mons like Toxicroak, Skuntank and Haunter. These drawbacks will make picking between the dragons more difficult. Eggy brings extra utility in ability to be a Trick Room setter.
Drampa was extremely good before it got stolen by RU. With more power and coverage similar to Eggy-A, Drampa will set itself apart with two useful abilities. Sap sipper allows Drampa to add both grass and ghost immunities along with elemental resistance to a team, while Berserk + Roost sets will be able to rack up Special Attack boosts and unleash. Because the added fairies will keep pressure on fighting picks like Gallade and Sawk, it remains to be see whether the fairies and other new mons like Frosmoth will be able to keep it in check. Drampa also brings the utlity of Glare and Defog as options.
Overall, all three of these Pokemon may end up being overwhelming to the tier, and it is hard to say whether the fairies that came along with them are enough to keep them in check.
The
Buglectrics,

both which have good special attack , STABs and access to coverage like energy ball, and sticky webs.
Some things that differentiate them-
Galvantula: A great speed tier and compoundeyes make this thing a cool prospect especially for hyper offense lead with its ability to outspeed many leads. I see it being used on HO to set webs, thunder something and then die. Specs could probably also work but will have to see if that option would more typically go to Ribombee over Galve as a specs bug on fast offensive teams.
Vikavolt: More splashable than Galve due to excellent bulk, a ground immunity, and recovery in roost. This thing can take a hit and man can it also deliver one - its huge special attack more than makes up for not being able to spam Thunder like its arachnid brethren. Due to its assets Vika will certainly find homes on many BO and Balance builds. Sets will vary but Specs was part of the reason Vika was hard to deal with back when it got banned, and it has options to do at least 30-40% to most switch ins to its moves so hard to say what the meta will come up with to wall this bug.

- The lord of lamps is upon us. Frosmoth has great special stats and a unique ability in ice scales that makes it a formidable tank. Its typing has some interesting resistances that will allow it to switch into things like leaf storms from Decidueye and Eggy-A (watch out for fire on that one) and stonewall some well known offensive powerhouses like Specs Abomasnow. Frosmoth has an awkward typing for a defensive mon with glaring weaknesses to fire and rock, however luckily these types are rarer in the NU roster. Frosmoth does have tools like giga drain to dispatch potential stone edge users like Rhydon after QDing, however it also came to NU alongside Ninetales who shuts it down quite fast and threatens a KO or set up. Sets including coverage options like Hurricane and Air Slash may be seen to deal with ninetales.
Bring on the Bulky Waters!!

- nice defensive glue mon that was very effective in RU, can usually effectively spread burns and shut down physical attackers with strength sap. Can see it checking sneasel with colbur and delivering a burn, but might not be able to effectively deal with silvally-dark before getting KO'd. May also struggle with some of our other offensive ghosts like Rotom, Haunter and Decidueye. Offensive Jelli-sets differentiate from other water options with grass coverage like giga drain.

- I'm sticking Poliwrath here too because with Water Absorb and solid defensive stats with 90/95/90 bulk, this thing can actually effectively run phasing sets with Circle Throw/Toxic/Protect etc, as well as being another reason for basculin to decrease in popularity. It also functions as a supreme check to Sneasel who will now experience some 4MSS having to start carrying Psycho Cut in order to hurt this frog. One of my favourite additions though- solid physical offensive power and unique dual Stabs, various usable sets like Bulk up drain, scarf and others, and new tools in Close Combat and Darkest Lariat will set this water apart.

- While Quagsire will probably still inch out Gastro on more of the stall builds due to Unaware, having a mon that can actually turn its absorption of Water moves into a powered up scald or earth power is quite useful and will find a home on many Balance and BO builds. Otherwise Gastro brings much of the same that quag does as they share recover and typing benefits like an electric immunity. Still a welcome addition!
Free the Fairies!!
After long enough with complete reliance on Clefairy and Alcremie, we see an influx of fairies...

- Tisse is a thick wish passer sure but I feel as though it will still face competition as a defensive passer from NU's beloved Clefairy as they are both slow and have similar bulk in the end, but Clefairy has access to teleport. An interesting point that sets Aromatisse apart is the ability to be more of a tank with solid 99 SpAtk and access to Nasty Plot and coverage options like thunderbolt and energy ball. Curious to see more exploration of its offensive potential.

and

Bombee and Whimiscott are very similar in function, and on the side of Offensive sets I think Specs Ribombee is clearly taking the lead with slightly higher speed and substantially more power. They can do much of the same and have similar coverage options, and both have defog and tricking options like Trick and Switcheroo. A few things set them apart other than a slightly different typing; Ribombee has sticky webs, and could fit onto teams that want a webs setter but also could use a fairy typing. Whimsi on the other hand has some interesting options with Prankster, Taunt and Encore, as well as with Sub-Toxic-Leech Seed sets that can work with both Prankster or Infiltrator. Whimsi also enjoys being a prankster than can dunk on Dark types with a fat Moonblast.
While QD Ribombee seems like it can't find proper setup opportunities, Specs Ribombee is very hard to switch into outside of a small handful of mons like Ninetales who doesn't love taking that much chip, and its overwhelming speed seems a bit much for the tier. Specs Ribombee does have more counterplay than Decidueye did when there were complaints of Specs Decidueye's brokenness - while Decid really only had Miltank stopping it, Bombee has Ferro, G-Fisk, Ninetales, Clef, etc.. These checks can be worn down after being used to switch in multiple times which does make dealing with Ribombee difficult.
If Ribombee were banned, Whimsicott would fill most of its roles to a lesser degree so at least the tier would have a fall back.
Release the Rockers!!

- Love this mon. My favourite rocker from SS returns! Rhydon has great offensive presents and dual STABS as well as checks a lot of physical attackers that don't pack water or grass coverage. Swords dance makes this thing very threatening as well within a single turn. Will surely be one of our most popular rockers again and despite its exploitable weaknesses, this mon should not be underestimated.

- This horse is going to take up the usage of Sanda and Piloswine a fair bit, with great bulk, freedom to carry leftovers, better attack and an amazing ability in Stamina. It is a useful blanket check for many mons and can also make excellent use of Body press with boosts from Stamina. With proper wish support Mudsdale can be quite difficult to take down and I'm sure it will be a staple pick for a variety of builds.

- basically our "type" replacement for Golurk, but all they have in common is that and stealth rock. Rune is slow, not as powerful as golurk, and has similar bulks to Cofa but its ground typing doesn't exactly help out its defensive cause in most cases. It did get a nice tool in poltergeist, and I could see it paving the way for more Trick room teams with all the other slow, powerful mons that we got. Probably will end up being a low-viability mon though, sadly, especially in a tier long dominated by its ghostly broski Cofag.
Not the NUBLS!!
It's been great to have these guys back to be honest and with a less "tight" meta, most of them don't seem nearly as broken as they used to be.

- Psychic/Fighting is such a desirable stab combo for this tier for muscling through usual fighting checks like Garb and Weezing. The presence of new fairies especially faster ones like Whimsi and Bombee won't do Gallade any favours and I don't think it will be regarded as broken anymore. It is still a great wallbreaker and versatile to boot with SD vs choice sets. A solid and welcome addition back.

still seems quite dangerous in general, but is much less broken for a main reason that Double dance Kingler has a bit of a moveset conundrum; Due to the addition of Poliwrath and Jellicent both, Kingler is forced to chose 1 of 2 options (Superpower for Wrath, Knock Off for Jelli). Nevertheless this mon becomes dangerous quickly and we'll need to see more use out of it to gauge its full potential now.

- is as insane as it was when it was quickbanned. We gained a few mons that outspeed it slightly that can be offensive checks, but this thing getting throat chop really made it hard to check, with even defensive staples like Cofa taking ~40% from it on switch in. Really all we got that can check it defensively is Mudsdale, while other defensive mons we got still easily fold to multiple attacks. While it may compete with Kanga which rose to the top as our Normal wallbreaker in August, Tauros' is still as great as ever and it probably is the most "broken" of the returned mons.

- Ice cream is welcomed back as an offensive hail/veil setter and special attacker, with many more defensive/offensive checks than before. I think its mostly safe to say that it isn't really broken anymore but definitely still a high rank mon that can do serious damage as well as can be paired with Alola-Sandslash to good effect.

- Sneasel is still a fast and strong attacker with stab priority and a fat stab knock off, and the Band set is still quite threatening. Outside of Poliwrath, Steelvally and Persian alola or Avalugg, there isn't too much that likes to stand in front of this thing still . It is still a glass cannon but it is hard to think of total counterplay that Sneasel can't at least lay a bit of hurt on. I'm not certain where this mon stands really but it seems less broken than before for sure.

- Haunter... I really do love Haunter but I think if it does stay around again it will just end up on every team again, opening a cycle of people running more scarf haunters to outspeed specs and sub disable haunters and then yeah, Haunter meta again. Overall counterplay to haunter is still a bit hit and miss, and sub disable set manages to find a lot of opportunities to switch in for free, sub up, and then wreak havoc. Part of me wants to it to stay around but I'm not sure its the healthiest mon especially in an expanded tier with more to explore.
And that's a wrap! In summary, this has been an amazing shift that has completely recharged and changed NU. I'm very excited to learn what is in store for our tier through these changes.