Cuties are a brand name. Part of the variation depends on the time in the season. In California as the almond season closes you get more seeds in the clementine fruit. Clementines are actually not a species of plant/fruit, but a variety of oranges/tangerines. So a variety of things can be marketed as a clementine. Just an FYI there is a big bru- ha- ha going on about them, because the farmers are mad at the bee keepers in CA because when seedless citrus is pollinated with pollen from other citrus that has seeds (e.g. oranges, etc.) the seedless produce has seeds. So the farmers want all these bans on bees.... kind of silly, but google clementines and bees and you get some interesting reading.