Tauren guilds

[Rogmasha-argent-dawn (Rogmasha)]

There’s Proudhorn Nomads, though their current storyline seems to be winding down:

[H/Tauren RP] Proudhorn Nomads - All That Remains

TL;DR: a dynamic RP community telling the story of a nomadic Tauren tribe under threat from without and within. Writers who are new to Tauren or Horde RP are particularly encouraged. Introduction: “We go where the wind takes us. If we are good, and follow the rites of our forebears, the Earthmother shall provide.” Traditionally a nomadic people, the Tauren settled atop Thunder Bluff when the High Chieftain Cairne Bloodhoof, leader of the united tribes, allied himself with the New Horde to dr…

I believe the Splitshield Tribe and Spirit Wolves are also still around, though they may be in something of a hiatus.

Tauren as a race tend to spread out a fair bit Hordeside.