So I'm finally getting around to planning that RPG, and I want some cultures with rigid gender norms that do not at all line up with the male/female binary (mostly to bludgeon cis players over the head with gender-non-conforming feelings).

I'm curious if y'all have ideas!

For instance:
1. The Classical Elements are the genders, you get assigned an Element based on your parents' Elements; each has a dress code, stereotypes, social roles, etc

2. Dwarves are agender and comedically bad at gender expectations. I think they might also reproduce by carving children out of stone together