Non-male Blessed Siblings?

[Brightamethyst]

It's not quite the same, but I did learn from doing Yok Huy side-quests that several of the in-game allied Yok Huy are women, suggesting that their race doesn't have much in the way of sexual dimorphism, if indeed they even have distinct sexes.

That's probably a "the devs didn't want to waste time making more than one model for the non playable races" issue, rather than the Yok Huy actually not having any visible sexual dimorphism. Most, if not all beast tribes allied societies only have a single character model even though we know that there are both male and female goblins, vanu, kobolds, etc.