Bloopy
Active Member
It exists as a genre or a label of some sort so long as someone finds it useful to categorise a grey area between alternative rock and metal. I guess alternative rock is so broad that it's not surprising if the bands don't always share characteristics. Personally I gave up even trying to distinguish which bands are 'alternative'. I think of sludge as a metal genre and Melvins as an early sludge band, so file them under metal. I'd file all the others you listed under rock.