Empress As you said, no I can't explain how all women are the same inside, and obviously they are as diverse brains-wise as everyone else. I really don't understand gender, like you and most other people here, and I don't really feel I have one, which is why I primarily identify as agender. But could you explain to me what you think the difference is between a 'woman' and a 'transwoman', besides biology. If the transwoman passed completely, and you would have no way of knowing that she was biologically male, then how would you tell the difference? I mean, I wouldn't be able to, I've known lots of both transmen and -women, and they are the same to me, but besides biology, how would you tell? I don't quite understand.
Also, I don't think everyone who not hyper masculine or -feminine is non-binary, you can still be a man/women without being extreme.
I think it is also how you feel when people gender you in a certain way. I know a transwoman who would be upset if someone saw her and read her as a man (the gender, not the biology), which is how she found out that she was not a man. Same with me, when I have periods where I feel 'gendered', if people refer to me as woman, with she pronouns, call me miss/madam, I feel uncomfortable, because people might see me in a certain way because of that, which is why I know that I am not that.
Did that make a bit of sense?