Hello there!
Honestly there are so many guilds out there it’s kinda hard to discern which might be the right type for you.
There’s guilds for Forsaken themes such as;
- The Gravesworn ([H-RP] Forsaken Military RP - The Gravesworn 🎃)
- Corpsegrin Irregulars ([Forsaken-RP] Corpsegrin Irregulars 💀)
They’re mostly your main two as for content outside of RP I don’t know how much they do.
For other Horde types of guilds that are multi-racial / welcoming of all races there’s so many to go through you have ones such as;
- Blood Howl ([H-RP] Blood Howl)
- The Far Reach ([H-RP]: <The Far Reach> - Artefact Hunting Horde Military Expedition ⛰)
- Grimtusk Offensive ([H-RP] Grimtusk Offensive)
- Gearbeast Inc (No forum for them I can find )
- The Iron Wolf Clan (The Iron Wolf Clan [Horde RP])
- The Ashen ([H-RP] <The Ashen> - Stalwart Defenders of the Horde! 🛡) (Though we are currently on hiatus till October )
These are predominantly Horde guilds because I can’t lie I don’t really look over at Alliance side guilds (No offence blue team!).
Hope some of these are a fit for you and you find what you’re looking for!