There are instances even in game for mixed heritage. While it is frowned upon and you'll deal with racism, there is a mixed Keeper npc in the game, I believe it's a Leeper- I'm mobile and quite can't remember which tribe the npc is from. Honestly lol at this point, you deal with racism a lot anyway so play what you like within games plausibility.
Nohni Vhaze || Khad Dotharl