this is enigmatic. I hope someone can figure it out, ill keep watching this thread.
here is what i would do: keep them all, except for the hets, buy a female caramel (maybe also a male) with paperwork from a known breeder and a known line and just keep breeding them and eventually start your own line once you figured out whats going on ^^
or just keep breeding the male to the two females and see what happens next year. Maybe next year you will get two clutches of caramels and no normal-looking hets, mother 1 might be a case of retained sperm. mother 2 i dont know.