I think you’ll find the MG Horde community generally pretty accepting, IC and OOC! But if it’s a guild you’re interested in, my own is still recruiting! You can check out our forum thread here:
☼ [H-RP] needs YOU for the Argent Crusade! ☼ - Moon Guard - World of Warcraft Forums (blizzard.com)
If it’s pan-elven cooperation you’re really jonesing for, Ashes of Alar might be up your alley! Their GM is actually one of my officers (Belenus is their character in my guild) and you can find their website here:
Ashes of Al’ar - “Once, we were Kings. Now, we shall be Emperors.”