Interesting analytics service shows most popular tracks by genre and playlists. I have not tried the free trial (I doubt I will)
https://www.spotontrack.com/
Sounds to me like a lot of data in search of an application.
Yeah agree its niche, the use case I saw was smaller bands trying to verify their playcounts and what playlists they appear on.
For example, song artists’ songs are picked up by branded playlists (Nike or whoever) and the artist may or may not want to be associated with that brand.