The way I see it, and sorry if I tread on toes saying it, the majority of the population are just passable in cis mode anyways.
There is a minority of drop dead gorgeous women, and ripped men. As well as a minority of down right ugly.
Sometimes you see a drop dead gorgeous gal married to an ugly looking guy. And vice versa.
I have seen cis guys who look feminine, even when they don’t intend to. I have seen blokey looking women, who even when they doll up, still look blokey.
***Now I got past all this skin deep stuff.***
I think the number 1 issue for passing within society is through our own confidence, and self acceptance. Whether we try and pass as a ciss man / woman, trans, or CD.