Yup. I think the gonzo strain has gotten more prominent and widespread in recent years.
Which only makes sense, given that the really creative folks who want to publish their own original ideas were/are only going to get so much juice out of the Gygaxian Vernacular.
Troika digs into a different mine (the Fighting Fantasy books from England and related fantasy).
DCC has been mining Lankhmar and Wellman's Silver John stories, and The Dying Earth (among others) directly. Which, to be fair, has been part of their mission for years- draw from and build on the old Appendix N stuff directly, not as filtered through Gary's interpretations.
They started out doing Old School modules for 3E ("Remember the good old days, when adventures were underground, NPCs were there to be killed, and the finale of every dungeon was the dragon on the 20th level? Those days are back. Dungeon Crawl Classics don't waste your time with long-winded speeches, weird campaign settings, or NPCs who aren't meant to be killed. Each adventure is 100% good, solid dungeon crawl, with the monsters you know, the traps you fear, and the secret doors you know are there somewhere."), and then they embraced the weird full-throttle. Robots and ape-men and mutants and laser guns and aliens galore.
Now we've got all sorts of folks publishing stuff like Slumbering Ursine Dunes, Fever Drinking Marlinko, Electric Bastionland, Yoon-Suin, Ultraviolet Grasslands, Veins of the Earth... All sorts of cool projects have taken us into weirder and newer terrain as the movement has progressed.