As to humans: You could have googled karyotype and understood that there’s things like XXY, you could have googled phenotype and understood that you can have a XY karyotype and still a female phenotype.
This is all massively more complex and diverse than you think it is I’ve not even scratched the tip of the iceberg here.
There are 2 sexes, factually. If you can show a third that has ever existed in any creature on earth you would win a Nobel prize.
Schizophyllum commune has over 20k sexes.
As to humans: You could have googled karyotype and understood that there’s things like XXY, you could have googled phenotype and understood that you can have a XY karyotype and still a female phenotype.
This is all massively more complex and diverse than you think it is I’ve not even scratched the tip of the iceberg here.