The six biological karyotype sexes that do not result in death to the fetus are:

• X – Roughly 1 in 2,000 to 1 in 5,000 people (Turner’s )
• XX – Most common form of female
• XXY – Roughly 1 in 500 to 1 in 1,000 people (Klinefelter)
• XY – Most common form of male
• XYY – Roughly 1 out of 1,000 people
• XXXY – Roughly 1 in 18,000 to 1 in 50,000 births

Even today, we irrationally, and rather stupidly, think of someone as a “man” if they look masculine and as a “woman” if the look feminine.

Joshua Kennon @ https://www.joshuakennon.com/the-six-common-biological-sexes-in-humans/

What causes some confusion in the general public is the use of biological sex and gender as interchangeable terms.  They do not refer to the same thing.

• Biological Sex – Usually determined by karyotype.  The brain, body, and reproductive system can be different sexes, in the case of legitimate transgender people, where the brain physiology resembles that of the opposite sex, or biological chimeras.
• Gender – Mostly used for cultural behaviors such as dress, mannerisms, signs of deference, et cetera, that differentiate the sexes, gender itself is not entirely a social construct.  As already mentioned, neuroscience research over the past few decades indicates through an overwhelming amount of evidence that gender is not a “blank slate” that is imparted entirely by civilization, but rather has some inherent characteristics that manifest regardless of upbringing or environment.

This is why some fringe activists can seriously say, “You can be a woman with a penis”, while most of the world will look at them like they have lost their mind.  They are inherently using the term “woman” to refer to gender and not biological sex.  This difference in vocabulary is responsible for virtually all conflicts between groups on issues in this arena.  They do not realize they are using a phrase to refer to two separate things that are often, but not always, congruent.

Joshua Kennon @ https://www.joshuakennon.com/the-six-common-biological-sexes-in-humans/