Those things didn't originate with D&D and they're far from unique to it. Even the alignment system (which in its first incarnation had only the Law-Chaos axis) was taken from Poul Anderson's novels. The race and class names have been coded to mean specific things in D&D but they were coined from archetypes that have been around a lot longer than the game has. Pathfinder uses many of the same names BECAUSE the makers of D&D didn't create them and don't own them (and Paizo's Remaster ditched the few things that might be an issue).