I find these subdivisions quite interesting to read, although I can well imagine the way the Reddit-populus responsed; the derogatory terms "dead end" and even "clones" in the list you deem valid, sound quite 'Wagnerian' (ie full of yourself, which I think is a dead end ;) )
kidding aside, I was glad to see this topic. I'd love to see whether the lists of prv and shadowwolf can be harmonised. But its always hard to refelct on your own time. It requirers you to stand above it al, which implies an objectivity (or at least a solely descriptive role), something I believe to be impossible.
To p7rv I'd like to ask, why do you want to map this time? Why do you want to get a sense of the scene?
(to be clear: I want it too, and I find your (or shadowwolfs) categories helpful. Not that I think that it is the definitive reflection on the scene, but in the sense that it is how you perceive it. )