Minifilia isn't a midlander, just wanted to point this out, she's a highlander but has the model of a midlander because they didn't have models for highlanders at the time of her being made.

Personally I would like to know more about the lala's, Au'Ra's, Miqo'te, even the Roe as they seem to not be "human" hyur are just hyur, elezen aren't known much about but they're just your standard elves. One of these days I need to dig up more lore on those races, beyond what's given in game.