https://going-native-from-out-of-the-mists.backerkit.com/hosted_preorders/138299 Paymaster games has run several crowd funding campaigns for minis based on Native American tribes and monsters, producing a bunch of cool stuff. I've got some of the minis from one of them and have been impressed
The minis (were) metal for the human sized stuff and resin for the larger things, both were well cast from the stuff I've had before
you can now pick up stuff from all the campaigns from the backerkit link above, so if you're interested generally, or run a weird west campaign take a look
examples (far more at the link)
Ogopogo Canadian Lake Monster
AhKlut, the orca wolf
Mishibizhwi, the underwarer panther
Aztec general
Aztec officer in coyote suit
Hawaiian Warrior
Pack Lama
Plains Dog Travois
Pacific Northwest Witchunter