Alright, so far, this is what I've got:
Emi is always a furry.
Neco Arc can be either a furry or anti furry.
Loona is always a furry.
Salazzle is always a furry.
Mal0 is always an anti furry.
Nicole can be either a furry or anti furry.
Isabellle is always an anti furry.
Diane is always a furry.
Lycanroc is always a furry.
Has anyone else got anything different?
Also, I ran into a bug. Had an anti furry show up and kill within the same night, no time to test or kill them before it happened.