I've got rats that aren't technically satins, because their whiskers are not wonky. They're extremely soft, though, and soft in two different ways. One of my girls and one of my boys have extremely long hairs, and are very soft and super-sleek & shiny, whereas one of the girls feels like a cotton-ball (similar to a rex), but has very short hair that makes her look like a standard (it's not shiny, either). All of their hair is significantly softer than most standard rats, but doesn't have that crazy "I got in a fight with a blow-dryer" look like my rex boy, sticking all over the place.
I've been calling them "silky" for lack of better terminology - what are they really called, if they're not satins? And does anyone know about the genetics of softer fur that's not rex or satin? (I'm not interested in breeding, just how the traits are passed, especially since these very soft rats are common in the pet stores.)