Yes, there are typically extra sex chromosomes. These are truly unfortunate individuals. Most of them end up identifying with one sex or another, but things can get complicated early in life when their guardians attempt to make the distinction for them. And the sex organs themselves are not always functional.
OK I need some help here. There is XX and XY. Where and how do the others come into play? My understanding has always been you have a Hermaphrodite with whichever/both organs, but the actual genetics base to one of the two...male or female.
And that the ‘confusion’ came pre genetic science.