Sorry if i’m barking up the wrong tree OP but if you were my friend, I would say to just pick a name that appeals to you 
because as posters have said, your child is going to be who they’re going to be, whatever you call them.
There isn’t a term to use for a boy who likes ‘girly’ things that has the same positive values as what you expressed with looking for ‘tomboyish’ names for a girl. So the elephant in the room is why aren’t ‘girlish’ traits valued or encouraged in boys..? Why’s it a one-way-street only?
But these are way bigger issues than babynaming so if you are feeling a lot of pressure around naming the baby, please give yourself a break. Names aren’t so powerful as all of that.
But as with anything in parenting it’s worth trying to be as self aware as you can about why you make particular choices. Lots of us have internalised misogyny to the extent we can’t even see it in ourselves and others. It can be scary as a woman to really ‘see’ that elephant in the room around you. Becoming a mother can really help to reveal it.
Lots of us also want to protect our girl babies from the sexism we have experienced ourselves, so maybe we might feel like picking a ‘cool’ ‘tomboy’ name usually used for a boy or man (rather than an ‘uncool’, ‘frilly’ name usually used for a girl or woman) will help our girl child to escape it. If that’s how you are maybe feeling, then I totally get that, it makes perfect sense to me.
Anyway, all the very best to you both with whatever name you go with.