As to rap not having powerful and creative lyrics and rhyming schemes, I would strongly disagree.

Just as in any genre, the MOR rap might be predictable, but there are just loads of very creative lyricists in the rap genre.

Some of my childrens' favorites that have become mine:

J. Givens (Incredibly creative and full of double-meaning requiring several listens to hear all of the 'choose your own ending' combinations that exist) with all kinds of 'inner' rhymes embedded here and there.

Here's one to listen to:
https://jgivens.bandcamp.com/album/el-v-envy - go to track 12.

Kendrick Lamar

Propaganda

Some of my old favorites:
Deepspace 5
Playdough
KJ52