Desdichado
Hero
That is extremely curious, because those particular influences are pretty large in Gygax's Greyhawk.
It makes sense to me - I know all about Appendix N but having a read a few of the books and stories, sometimes actually finding those inspirations in the actual setting is hard unless one looks at the Vancian magic system, or just the pure existence of a thief class or a barbarian class, etc.
I 100% agree, and always have. D&D has never resembled the very works of fantasy fiction that it claims to be inspired by except in extremely narrow and specific ways. The overall picture of D&D was that it was a weirdly unique game of dungeoncrawling, an activity for which there is no precedent in fantasy fiction* in a setting that had purity spiraled into esoteric High Medieval wargaming, with a handful of fantasy elements scattered abroad, but mostly specifically in the dungeons which, again, there is no precedent for anywhere in any of the literature.
*Some people claim the mines of Moria sequence is a prototype dungeon crawl. This is obviously not true. The dungeoncrawl is a bizarre location with strange traps, monsters, and acid trip f/x that characters go into on purpose in search of treasure. The mines of Moria sequence was a couple of chapters of travelog and character and setting development, capped with a brief chase/fight sequence, and the characters all (with the exception of Gimli) wanted to avoid the place. And don't even mention, "well there was that one Leiber story..." No. There is no precedent for dungeoncrawling in fantasy literature. It was purely an invention of D&D, because of D&D's specific wargaming roots. It wouldn't make any sense for it ever to exist otherwise.