Like in Music and film/television, if you could give separate the map pool into a limited number of specific genres, what would they be?
(Separate of tiers, mapper, and lengths of time, of course)
Maybe something like Casual, Technical, Endurance (long), and PRO Friendly (pro saves and no death drops). Possibly a themed or meme section for some of the more extra maps.
Or you could do it by kz genre something like: