You don't actually need sexual dimorphism. Plenty of animals don't have it.
and on the flip note many of them do have it.
I mean, for those that do fine, for those that don't okay exemplify please. To the guy who listed 4 races and said it was 50/50, sure that sounds right when you narrow it down to only those races ever appearing in any future game. However it's not going to be limited to them, we will gain new races over time, and you forgot about humanity in your breakdown.
What im saying is whether there is any now isn't the question, but rather should there be more going forward. I already pointed out which one had it and didn't. So what's really the point of reiterating what we already know? What I also proposed is that mayhaps they could even rework some less defined ones to accentuate it more even if it means a slight redesign.
As far as the comics go, I kind of scoff at those to, in fact the reason i made this thread is because I did looked up Thane's Wife while looking for something else and saw some of the scans of her from said comic. Because where these first examples of female members of a previously male seen only race appear in a comic instead of a game, I'm a little reluctant to cite them as artistic vision as intended.