Well, I can see 2 styles that take up one half. Those styles look as if the colors from the ground/cliffs have been switched. I think they would look good meshed into each other (aka the biome would be partially one of the styles, and partially the other) in a large, mountainous desert island, with some palm trees and oases dotting the landscape (maybe even some tipis and cacti instead if you're into the American desert type).

Cool man, wish i could bee that good with world painter.