Here is a thread (much like the one found on the DC boards) dedicated to discussing the characters in the Marvel Universe belonging to the Native American race (counting Mestizos and Métis as well since they are also visibly Native). Some of the characters might be up for debate but I’m more than willing to explain why they were included

NATIVE AMERICAN: A member of any of the indigenous peoples of North, Central, and South America (ie Cree, Navajo, Aztec, Mayan, Inca, Quechua...etc)

MESTIZO: (In Latin America) A person of mixed race, especially one having Spanish and indigenous descent.

MÉTIS: (Especially in western Canada) a person of mixed indigenous and Euro-American ancestry