[where-group-by]

They kind-of do. The main page allows you to browse popular albums by genre. Each individual album also has a "recommended by this artist" footer, or "people who bough this also bought" (if there aren't any recommendations set).

I also check profiles of other people who purchased an album I liked and see if anything catches my interest.

I do not use Spotify, so I'm not sure if the above counts as a proper discovery tool.