If it’s a night elf guild you’re looking for, I’d direct you to the night elf RP thread for a list of guilds; I believe all of the current guilds are in there!
Knowing Mayne’s concept, I think I’ll echo what Tehya says - your options within the night elf scene will be fairly limited. There’s only a few guilds currently that I think would work.
That said, I think a good fit may be the Crescent Vigil, led by Andoril. A short description from their thread:
Led by Andoril Thornrage, is a collective that chose to follow the path offered in pursuit of a better future for the Kaldorei. They consist of artisans, militia, and various individuals not necessarily suited for the traditional paths of military action within Kaldorei society. The guild’s primary focuses are on civilian affairs, militias, and offering places for Male Kaldorei concepts to hold major validity while being supported by lore.
I think the Vigil may be your best bet - if not, I think your best options would be to seek out something not focused so much on night elves. Good luck regardless!