Yes, there are several kinds. I have Spring Satin plumcot, Apex plumcot, Black Alexaner Plumcot, other plumcots still unnamed and Flavorella plumcot.
The plumcot is 50% plum and 50% apricot by phenotypic expression.
I've posted my frustration and success with Flavorella plumcot which bore for me truly the best tasting stone fruits I ever had, just last year, after 7 years of bloom.