Technically there is more than 2 genders. In my high school biology class they said that rarely people can be born with 3 chromosomes. I can’t remember the chromosomes but they were called super male & super female.
It’s been over 20 years, I think that is what they were called. I think super was because there was an extra chromosome. This was an academic biology class & the teacher showed slides that had pictures. The female did not look female.