Jester David
Hero
Drow are non-standard elves, certainly not always core, and pretty darn evil as well. Dragonborn are non-humanoid. And traditionally, the presentation of humans has been European only, and not going to, say, Kara Tur.Dragonborn are caucasoid? That's news to me.
Maybe it's my Darksun days, but I don't see halflings as caucasoid either. More aboriginal. Large foreheads, flat faces, high cheekbones, neotenous. Arguably more Asian than caucasoid.
Many of my human nations are not caucasoid. Ti'en Ch'i is Asian for example.
Drow are not caucasoid. They're not afroid either BTW.
There's no reason to think elves in general are caucasoid, in fact. They're generally depicted as light-skinned, but that could just mean they're Japanese. Or, you know, nonhuman.
There's not a lot of people on colour in the 1e and 2e core rulebooks. Even in the 4e books it's pretty white.
In past editions it was really clear that white people were the norm. Heck, the 3e PHB tried to remove the token white male, not including one in the iconics. The iconic fighter was going to be Tordek, the dwarf. But WotC vetoed that idea and made them include a white male. Redgar the fighter, who suddenly appeared on all the advertisements and promotional material for 3e, being the D&D iconic character. (The D&D team didn't much like Redgar, which is why horrible things kept happening to him in the art.
Personally, I think the 5e PHB did an excellent job here. The human in the PHB is a black woman, and the fighter is a black male. Excellent representation. And it emphasises that humans come in all different colours by devoting some of the page count to listing different ethnicity.
This is what needed to be done. They didn't just ignore the issue as "not their problem" or say that people could play other ethnicities. They actually went for representation.