Kinda Approved by DHR-107 Art by Sapphire.
Pokemon Go Viability Rankings
As you may know since the game Pokemon Go has been released there has been a new way of introducing how useful a Pokemon is in terms of Pokemon Go battling. In Gym battles there are Pokemon that shine in being a Gym Defender and Pokemon that simply do not either because of it's stats or movepool, in this unofficial viability rankings the council will agree on what Pokemon are suitable to defend a gym and what Pokemon aren't. Feel free to post your thoughts on the viability rankings with reasoning and the council might accept your idea.
Council
Conni
Advantage
(To be added)
Defensive Viability Rankings
S - Rank
These Pokemon are the top notch gym defenders and attackers and currently has a great mix of a good movepool, good statistics, and a significantly high Combat Power (CP) max. These Pokemon are currently the best Pokemon for your gyms and should be used if you have one.
Snorlax
Dragonite
Lapras
A - Rank
These Pokemon are also pretty good but aren't the best defenders for gyms as they at least have one flaw regarding them, they can do their job pretty well but not as good as the S Ranked Pokemon can, they're a second option if you want to dominate a lot of gyms and they can be relied on but like mentioned earlier these Pokemon aren't the best top-notch quality but can manage their way.
A+
Vaporeon
Gyarados
Hypno
Arcanine
Blastoise
Clefable
Poliwrath
Wigglytuff
Slowbro
A
Golem
Starmie
Exeggutor
Venusaur
Charizard
Machamp
A-
Flareon
Cloyster
Vileplume
Jynx
Magmar
Rapidash
Rhydon
B - Rank
These Pokemon are easily stated Mediocre since they aren't as good for gyms as the two ranks above it. B rank Pokemon aren't as good in term in CP max or movepool meaning without a good CP max and wide movepool it can't defeat Pokemon that are super-effective against it or can stall it out with their good stats. These Pokemon would be adequate choices for beginners but for late game players these Pokemon come as a last resort.
B+
Scyther
Gengar
Muk
Nidoking
Nidoqueen
Marowak
Ninetales
B
Jolteon
Pinsir
Sandslash
B-
Alakazam
Electabuzz
Hitmonlee
Hitmonchan
C - Rank
These are the underdogs of Pokemon Go, meaning that they are your last option in defending a gym. These Pokemon can have bad stats, a limited movepool, and a poor CP max. These Pokemon are your last option and should never be used to defend a gym if you have Pokemon in a higher rank than it since it will just be outclasses quickly, it should be used something like a placeholder or a temporary guardian to defend a gym just so that you can put another Pokemon to replace it, but like stated above, you shouldn't really consider using these Pokemon if you have better ones.
C+
Magneton
Weezing
C
Raichu
Electrode
Porygon
C-
Beedrill
Lickitung
Raticate
D - Rank
The worst of the worst, the trashiest trash in the dumpster, to be blunt these Pokemon just suck. They have no outstanding qualities and shouldn't even be used at all instead of filling out your PokeDex or just to sit down and pity them. Never consider using these Pokemon in gyms because they aren't reliable and get outclassed in an instant so just catch one of them and that's your only purpose for them, don't use it for gyms, as there is completely no reason to do so.
Onix
Dugtrio
Farfetch'd
Butterfree
Attacking Viability Rankings
S - Rank
These Pokemon are currently the best attackers due to their access to a movepool with good coverage variety and moves that have a fast DPS (Damage Per Second). They also have good overall stats, max CP to maintain their offensive skills in battle and easily challenge and defeat the defending Pokemon.
Snorlax
Dragonite
Lapras
Vaporeon
A - Rank
These Pokemon are good at their job as an attacker but aren't as good as the S Rank Pokemon. These Pokemon have good movepools with good DPS that allow them to pull out attacks quickly and defeat the opponent with fast and powerful moves, they also have good stats to maintain themselves in battle and have good max cp.
A+
Wigglytuff
Arcanine
Gyarados
Slowbro
Blastoise
Exeggutor
Venusaur
A
Poliwrath
Omastar
Tentacruel
Hypno
Machamp
A-
Clefable
Nidoking
Nidoqueen
Charizard
Cloyster
B - Rank
These Pokemon are ok at attacking gyms but aren't as effective as the Pokemon in the ranks above them. These Pokemon have a decent movepool and have a moderately effective DPS that at least get a simple grasp on the opponent with ok timing and power. These Pokemon also have mediocre stats and cp max that can be semi-reliable but should only be used when dealing with gyms that don't really have a threatening Pokemon, but these Pokemon should never be used over Pokemon in higher ranks.
B+
Golem
Rhydon
Dewgong
Gengar
Flareon
B
Marowak
Sandslash
Jolteon
Magneton
Electabuzz
Rapidash
Ninetales
Pidgeot
B-
Raichu
Electrode
Magmar
Weezing
C - Rank
These Pokemon are not very good at attacking other gyms maybe because their qualities are better for defending gyms or their overall movepool and moves that access fast DPS are limited. These Pokemon might also have poor CP maxes and total states. These Pokemon shouldn't really be used for attacking as you don't have to leave a Pokemon to attack a gym unlike Pokemon defending a gym since you can attack with the same Pokemon over and over, so C rank Pokemon shouldn't really be considered using unless its a last ditch effort and all your good Pokemon are defending gyms or have other needs to tend to.
C+
C
C-
D - Rank
These Pokemon are not suitable for attacking gyms at all because they have a limited offensive movepool or have access to moves that have mediocre or poor DPS, their stats are not be as good as well as they cannot maintain themselves in battle with the player's control and their cp max would be pretty poor so they can't really take any hits or dish out any damage so these Pokemon shouldn't be considered at all for attacking gyms and probably shouldn't be used for defending gyms either if their overall features are poor.
(The viability ranking council is still making decisions so if you see that there are some Pokemon left out then it's probably because we aren't finished ranking)

Pokemon Go Viability Rankings
As you may know since the game Pokemon Go has been released there has been a new way of introducing how useful a Pokemon is in terms of Pokemon Go battling. In Gym battles there are Pokemon that shine in being a Gym Defender and Pokemon that simply do not either because of it's stats or movepool, in this unofficial viability rankings the council will agree on what Pokemon are suitable to defend a gym and what Pokemon aren't. Feel free to post your thoughts on the viability rankings with reasoning and the council might accept your idea.
Council


(To be added)
Defensive Viability Rankings
S - Rank
These Pokemon are the top notch gym defenders and attackers and currently has a great mix of a good movepool, good statistics, and a significantly high Combat Power (CP) max. These Pokemon are currently the best Pokemon for your gyms and should be used if you have one.



A - Rank
These Pokemon are also pretty good but aren't the best defenders for gyms as they at least have one flaw regarding them, they can do their job pretty well but not as good as the S Ranked Pokemon can, they're a second option if you want to dominate a lot of gyms and they can be relied on but like mentioned earlier these Pokemon aren't the best top-notch quality but can manage their way.
A+









A






A-







B - Rank
These Pokemon are easily stated Mediocre since they aren't as good for gyms as the two ranks above it. B rank Pokemon aren't as good in term in CP max or movepool meaning without a good CP max and wide movepool it can't defeat Pokemon that are super-effective against it or can stall it out with their good stats. These Pokemon would be adequate choices for beginners but for late game players these Pokemon come as a last resort.
B+







B



B-




C - Rank
These are the underdogs of Pokemon Go, meaning that they are your last option in defending a gym. These Pokemon can have bad stats, a limited movepool, and a poor CP max. These Pokemon are your last option and should never be used to defend a gym if you have Pokemon in a higher rank than it since it will just be outclasses quickly, it should be used something like a placeholder or a temporary guardian to defend a gym just so that you can put another Pokemon to replace it, but like stated above, you shouldn't really consider using these Pokemon if you have better ones.
C+


C



C-



D - Rank
The worst of the worst, the trashiest trash in the dumpster, to be blunt these Pokemon just suck. They have no outstanding qualities and shouldn't even be used at all instead of filling out your PokeDex or just to sit down and pity them. Never consider using these Pokemon in gyms because they aren't reliable and get outclassed in an instant so just catch one of them and that's your only purpose for them, don't use it for gyms, as there is completely no reason to do so.




Attacking Viability Rankings
S - Rank
These Pokemon are currently the best attackers due to their access to a movepool with good coverage variety and moves that have a fast DPS (Damage Per Second). They also have good overall stats, max CP to maintain their offensive skills in battle and easily challenge and defeat the defending Pokemon.




A - Rank
These Pokemon are good at their job as an attacker but aren't as good as the S Rank Pokemon. These Pokemon have good movepools with good DPS that allow them to pull out attacks quickly and defeat the opponent with fast and powerful moves, they also have good stats to maintain themselves in battle and have good max cp.
A+







A





A-





B - Rank
These Pokemon are ok at attacking gyms but aren't as effective as the Pokemon in the ranks above them. These Pokemon have a decent movepool and have a moderately effective DPS that at least get a simple grasp on the opponent with ok timing and power. These Pokemon also have mediocre stats and cp max that can be semi-reliable but should only be used when dealing with gyms that don't really have a threatening Pokemon, but these Pokemon should never be used over Pokemon in higher ranks.
B+





B








B-




C - Rank
These Pokemon are not very good at attacking other gyms maybe because their qualities are better for defending gyms or their overall movepool and moves that access fast DPS are limited. These Pokemon might also have poor CP maxes and total states. These Pokemon shouldn't really be used for attacking as you don't have to leave a Pokemon to attack a gym unlike Pokemon defending a gym since you can attack with the same Pokemon over and over, so C rank Pokemon shouldn't really be considered using unless its a last ditch effort and all your good Pokemon are defending gyms or have other needs to tend to.
C+
C
C-
D - Rank
These Pokemon are not suitable for attacking gyms at all because they have a limited offensive movepool or have access to moves that have mediocre or poor DPS, their stats are not be as good as well as they cannot maintain themselves in battle with the player's control and their cp max would be pretty poor so they can't really take any hits or dish out any damage so these Pokemon shouldn't be considered at all for attacking gyms and probably shouldn't be used for defending gyms either if their overall features are poor.
(The viability ranking council is still making decisions so if you see that there are some Pokemon left out then it's probably because we aren't finished ranking)
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