@manlycoffee @atomicpoet Oh, I've seen a documentary on TV a few years ago featuring this. There is a whole village in South America where there is a large ratio of children having this condition.
Unfortunately they often get bullied in their teens, after transitioning. :( So it's not really accepted that much even though it is very common.
Found a link which describes it in more detail:
https://guardian.ng/life/las-salinas-the-village-where-girls-become-boys/
Nature can be crazy interesting.