I'd consider lessers / butters and cinnamons / blacks to be the same thing. Who cares if one has more yellow than the other, or if one super is more black than the other? That doesn't make them different morphs. They still share the same genetics.

That's like saying a Graziana pastel is a different morph than a NERD pastel because one is typically brighter than the other, or the other typically has more blushing. Cinnamons and blacks both make the "black" patternless, and lessers / butters still make platinums and solid white leucistics. They're pretty much just different lines of the same morph. Now, if one of them ends up making a morph that can not be reproduced by the other version of it, then that would make them different morphs, but that has yet to happen with either.