I'm pretty sure some members here want lists of bands because they can't think for themselves and need the DLA to tell them what to like(or pretend to).
Let's get rid of a stupid illusion here:
Everyone can think for themselves.
However, if you want to change the world (not just in your own head) you need a CONSENSUS.
That means people agree to ignore certain grey areas, confusions, personal prejudices and the like to focus on the BIG PICTURE: what is more similar than different?
If people want a definitive list, it's because they want it to organize politically (in essence) around it.
It's an idiotic meme and you should be ashamed of yourself for repeating it that people can't think for themselves. They all do -- and that's often the problem, since so few are qualified in any given area.