Overall, I can understand your indignation, I also love to create characters that are similar to myself. But I do not see the point in changing the appearance of the races "for myself". It seems to me that this may violate lore.
I'd have more respect for the D&D lore if the creators didn't go cherry picking ftom various folklores and mythologies themselves. It's a patchwork setting anyway. So at this point tbh I don't care if more variety would be inconsistent with lore. All the playable fantasy races look very human-like to me, including the gith or tieflings. The body types, body postures, face mimicry - it's all the same. Elongating a skull or making face features more "pixie" isn't going to make them look less human. That's just a bit of cosmetics you might do for a Halloween costume. Mind flayers are about the only species that looks alien.
That is, you do not take into account the cultural and external characteristics of races? Or do you just think that in order to make a fantasy race different from humans, you need to make it as strange and alien as possible? Perhaps I misunderstood your idea, but it seems to me that with such a logic, all fantasy races, from trolls to yugoloths, can be called "people".