Yeah, Native America seems like it would be going for the "Low model count but relatively strong and with a lot of environmental manipulation" kind of army. Having Wendigos cause a winter aura that impedes movement, skinwalkers be able to deploy and redeploy themselves by turning into an animal and stealthing in, all while Akhluts smash the front line.
Meanwhile you know what'd be a radical monster for the Hindu faction? The Raktabija. Motherfucker has the superpower to clone himself whenever a drop of blood is spilled. I would love to see that as a unit mechanically, where it could have a maximum clone number based on the points you spend on it, but they don't deploy until it or its clones get injured. Every time one takes damage, you can deploy a unit from your pool. How's that sound?