The roleplaying game
Coyote & Crow presents fantasy versions of Indigenous Americans (and some Indigenous Canadians and Indigenous Mexicans). Mainly reallife Indigenous (largely Cherokee) created this setting. It presents a what-if pan-Indigenous perspective. The premise is, the migrations of Europeans into the Americas never happened. Instead, the various tribes evolved autonomously, admixing and reforming, while developing technologies organically from within the Indigenous experiences and sensibilities. Thus there are new fantasy tribal peoples and new tribal confederations.
The game instructs, if the reallife player is non-Indigenous, then use the fantasy cultures of the game as-is. For ones own character, be otherwise ones self. The character can do what one oneself would do in that situation. If the DM or player happens to be of an Indigenous tribe oneself, then one should add reallife Indigenous names, words, places, and customs from ones culture to enrich the Coyote & Crow setting, adding depth and verisimilitude, as well as personal resonance. However if the player isnt Indigenous, one must not do these things, must not imitate a reallife tribe, because they are "almost certainly negative stereotypes of Native Americans". Again, whatever the players identity, when roleplaying a character, one can be oneself within the setting context.
The Greyhawk setting is mainly a reallife culture with a twist. Gygax designed his cultures by taking something familiar from reallife, then adding something unfamiliar to it. Cultural sensitivity applies. The 2024 Greyhawk often needs to ensure sensitivity when the past occasionally took missteps.