If I was going to do Weird New World now, I'd use the map of northern North America instead of inventing a map.
Qelong is a Cambodia analog.
Pembrooktonshire is in northern England (and Hammers of the God nearby), Tower of the Stargazer in Scotland I think I mentioned in Death Love Doom.
Grinding Gear would work perfectly somewhere on a road in Better Than Any Man (a reason why the inn is not in use!).
Isle of the Unknown was based on a rotated and flipped Corsica I think, but of course it doesn't work at the given scale (and the flora and fauna are totally different).
Tales of the Scarecrow took place in Wales in my campaign.
Monolith can be anywhere.
Carcosa of course is a different planet.