There are only two
There are only two sexes. Romance languages generally have three genders, but some languages have as many as nine.
There are some subtleties like XYY XXX etc on the last chromosome, but they are exceedingly rare. They still express as Male or Female. The one problem is hermaphrodites. I think all hermaphrodites should serve in the military. They get to command the addadictome and cutadicfrome squads. They are to be the latrine squads. Clean em boys, girls, unsures, idiots et all. Let those poor hermies get some payback on these idiots.
Why can’t I pick no gender? I am being discriminated against by being forced to pick a gender. Why can’t I opt out?