If you are looking for information on this specific style of production for a project or study, here is what those terms signify in the music industry:

This indicates the beat can be used for non-commercial purposes, though a "lease" is usually required to put it on streaming platforms like Spotify or Apple Music.

Studies on how producers use SEO (search engine optimization) keywords like "smooth" or "dark" to reach specific audiences [2].

A marketing term used by producers to help artists find instrumentals that match the style of a specific famous artist (in this case, likely a "Hotline" or "Drake" type vibe).

If you are actually writing a paper about this phenomenon, you might find these academic topics relevant: