Well the National Call Breeders list 36 on their posters and I expect there might be a few that they couldn't get pictures of. there was no information about what is rarest, so you go figure. Sorry I couldn't be more help.
I had a pair of each and lost them to predators! The ginger hen was excellent quality too. The lady I got them from must not breed anymore. I've tried contacting her twice via email and have had no response.