Here is my DREAMLANDS REMIXED setting, as done by someone else, featuring the Dreamlands with a bunch of Zothique and Hyberborea from Clark Ashton Smith added in, as well as a bit of Pegana by Lord Dunsany (including the name of the "world".)
I probably would have been a bit more direct in my borrowing of Zothique and Hyperborean elements myself (i.e., they'd be explicit big islands, easily spottable in the setting) and would have used some Hyborian and Thurian Age borrowings from Howard as well. But this is still very close to what I would have done.
As I'm currently re-surveying much of my classic sword & sorcery collection right now, I'm feeling like this setting is in need of revisiting; or perhaps initial visiting, since it never advanced in my mind beyond being a high concept. I don't have the wherewithal to make a map as nice as this guys, but I can still pull something together, and then make a quick and dirty gazetteer to go along with it.