I mean either use the tribe/people names like Africans/Aztecs/Incas, or if there is no better naming just find the Lakota word for “warrior” “rifle” “sharpshooter” etc and anglicize ti (like “yumi” “qiang” “changdao”). It is still better than some forced unique name like “hawk” bow or “thunder” rifle.
Just like soldado is still a better name for a unit than something like “eagle-and-snake musketeer”.