Um... Ronnie Radke.. I'm sort of guessing Frank Iero is gonna make an appearance, but if not, yeah him too, maybe Pete Wentz. I'm unsure on if you meant general stuff or just Werewolves and Vampires but here are my guesses based on what you said. Hopefully I got one or two right
Slash: Werewolf
Gerard: Vampire
Mikey: Vamp (possibly wolf...)
Jeffree: Vamp
Andy: Vamp
Jake: Vamp
Jinxx: Wolf
Jade: no idea
Davey: no idea
Ashley: no idea
Sandra: no idea
Author's response
Actually, t can be any type of creature, not just vampires and werewolves. And yes, you got 3 right :)
Don't forget that you've also got angels, demons, and all those other creatures to choose from. :D