none of these are genres. they are formats. the genre is RPG.
This, pretty much.
Sometimes I worry that the subdivisions might get as bad as it is in metal where it sometimes seems there are more genres than bands.
I disagree, even though specifiers are not important to a person who is not into the genre, they can be very useful shorthands for describing things. Wow, diablo, bg, dos, ff are all rpgs, but they are all distinct subgenres with their own tropes, themes etc. If someone says a game is "souls like" or "4x strategy" it conveys a lot of information very efficiently.
