Or possibly a pegataur. (Some pre-existing mythos due to the Kyriin? or whatever that Imm and their race was called)

I'm imagining these as naturey oriented good-align creatures with Druid, Shaman, Ranger, Paladin, and Warrior as possible class options. Obviously a bonus to plains terrain choice and possibly hunter expertise (though of course hunters suck). Inability to wear boots (but can wear hoof armor) or leggings (at all). Maybe can wear felar tail armor?

Bonus to kick, possibly even an auto-kick like minotaur gore. Inherent ability to Run some distances. Maybe a bonus to dash and charge and perhaps polearm as a spec. Champion spec should be the preferred paladin dedication, and monk should be hard/impossible. Any spec that requires getting really close to you opponent (dagger, hands) should be hard. Resistant to trip (4 legs), but vulnerable to pierce damage type due to their large bulk and momentum. Low dex, moderate strength, good wis, decent int, very good con.

That's all I have for now.