This is my take on their sexualities so sorry if you don't agree and I don't really have my own au btw! This is base off my thoughts and ships!

William/Springtrap: Bisexual, demiromatic and demisexual
Clara/Ballora: Straight and demisexual
Michael: Gay and demisexual
Elizabeth/Cirus baby: Either lesbian or pansexual and demiromatic
Chris/Shadow Freddy: Gay and asexual
Nightmare: Gay and demiromatic
Nightmare golden Freddy: Gay and demiromatic
Herny: Pansexual
Terrance: Bisexual and asexual
Charlie/The puppet: Lesbian
Glitchtrap: Bisexual, demiromatic and demisexual
Vanny: Straight and demisexual
Noah/Ennard: Gay
Freddy fazbear: Bisexual and demiromatic
Bonnie: Gay and asexual
Chica: Straight and demisexual
Foxy: Pansexual and demiromatic
Golden Freddy: Asexual and aromatic
Toy Freddy: Straight
Toy Bonnie: Pansexual and demisexual
Toy Chica: Straight and demiromatic
Mangle: Straight and asexual
Balloon boy: Pansexual and asexual
JJ: Pansexual and asexual
DeeDee: Pansexual and asexual
Minireenas: Asexual and aromatic
Funtime Foxy: Pansexual, demisexual and demiromatic
Lolbit: Bisexual and demiromatic
Funtime Freddy: Bisexual and demiromatic
Yenndo: Straight and asexual
Bon-Bon: Either gay or pansexual and asexual
Bonnet: Either lesbian or pansexual and asexual
Bibybab: Asexual and aromatic