I think I've so often thought of femboys as being "pre"-transfem that a transmasc enby femboy so perfectly challenges that I'm tempted now to adjust my anchoring bias for femboys to be transmasc
also completely makes sense that you had to look and feel male enough before femininity could really fit as a comfortable "gender non-conforming" look for you (rather than just causing dysphoria and being perceived as female and gender-conforming)
I basically didn't wear pants for the first year of my transition for related reasons (basically couldn't stand anything that could be perceived as masculine or unisex clothes until I actually looked female enough for the clothes to not make me feel like a man).