In addition to the aforementioned guilds, there’s also plenty of merchant/craft guilds, entertainment (of all kinds), tavern/host guilds, and even the Azerothian equivalent of a Humanitarian organization.
I am a little surprised at the relative lack of any religious guilds. Stuff like Shamanic circles or smaller cults. Likely I just haven’t noticed them, though.
But yeah, as mentioned, pretty much any that aren’t restricted by race are going to have some Blood Elves in them. Virtually none of them go around supporting Sylvanas these days, though.
What kind of character do you actually have, OP? That’ll make it easier to find a guild that works for them.
In the meantime, there’s…
https://us.forums.blizzard.com/en/wow/t/wra-information-directories/651240/2