The one named Brynn to me appears as someone who was born at the least a man if not still is. Appears a bit like when you watch a comedy where a man wears women’s dresses or something like that old Tom Hanks situation comedy.
Check Bryn’s photos in this article.
Somewhere else I saw a claim that “Kitten” was eventually going to produce children for the other two; it may very well be that the other two are both genetically male, and have undergone surgical lopadickoffomy.