No, you're on the right track. The Primes used to work for Andy before they branched out on their own and Frontline (to the best of my knowledge was made at the same factory that K & C was made). There are also some figures that say K & C on them but are actually Frontline; Louis could confirm. I believe that Larry had some of these, maybe Louis.
Some of the Frontline glossy are quite nice and do bear a certain similarity to K & C gloss.
Brad