I am total agreement with the OP's point. It is confusing to list all these morphs as different morphs if they are not. There are too many to keep up with as it is. I would like to see a list of all major base morphs with "complexes" listed and all "morphs" that belong to that "complex" listed. For example for co-dominant morphs:
Black Pastel-Cinnamon Complex - Black Pastels, Cinnamons (would mahoganies fit this?)
Has anyone crossed a black pastel with a cinny to get both genes in one snake? Mating such a snake with a normal would tell us whether the two genes are compatible. If they are not compatible, they cannot be the same gene. They may not be the same gene even if compatible, but that is harder to test.