I don't think they'll be very useful.

Approximate composition:

1. Slaves/Rebels/Miners - Most likely, they are Orcs, just skinny and without good weapons. )
2. Hunters/Scouts/Bear Riders - Definitely humans. Archers.
3. Wolf Riders/Lancers/Raiders - Humans on large and fierce wolves.
4. Wild Griffons/Night Griffons/Cliff Guardians - These will definitely be Griffons.
5. Ogre Shamans/Ogre Mages/Blood Warlocks - Overpowered human-orcs. The fruit of sin.
6. Marksman, ideas - a hand-held culverin or a hand-held ballista. )
7. Trolls/Ethereal Trolls/Mountain Trolls