The current doctrine is that there are unlimited genders, if you can think of one you can call yourself that, they call them “neopronouns” and aren’t simply relegated to xe/xer but include things like wolfkin and dragonfucker. There’s also plurals which to the best of my understanding feel like there’s multiple people usually with multiple neopronouns inside their head simultaneously.

I’m not either of these so maybe someone who is can elaborate better, but that’s what I’ve been told and I hope it helps.