That’s not even mentioning jazz rap, rap/rock performers like Rage against the Machine etc.Yep,
Rap and Hip/Hop has been around a long time and is contiguously evolving.
No musicality involved ?
A producer makes a beat using all types of instruments, sounds and samples.
Then the vocals are performed over it.
No different to a band making a song.
To group it all as one genre is naive.