Well, your original question used the word "passing", which is not a word I use because (a) it suggests trans people deceptively "pass themselves off as" something they're not; and (b) pragmatically, it implies there's a single standard of what it means to look like a woman, and likewise for looking like a man, and since such standards don't exist, it's unclear what the word means. So I'm still unclear on exactly what you were asking.