+1 speed Azelf is kinda a gimmick. It's not used enough to justify its presence in the Speedlist (Choice Scarf is almost never used and Adrenaline Orb is even rarer).
+1 Azelf (+Spe) is 541 Speed. Not just for scarf, but also Adrenaline Orb
Instead of 236 Jirachi/Linoone/Mew/Tentacruel 100 Neutral 252 0, change the 252 Speed evs to 0 since this pokemon achieve 236 speed with 0 evs236Jirachi / Linoone
Mew / Tentacruel
100Neutral2520