We have some german songs about this topic I believe. First that comes to mind is “Illegale Fans“ by Deichkind. Title's a dead giveaway.
Oh wait that's not rap. But still.
A lot of them plagiarise music for their mixtapes without asking permission e.g. Frank Ocean.
Also, very many rap songs contain samples and interpolations from other songs, so they're not really that original
Oh wait that's not rap. But still.
Also, very many rap songs contain samples and interpolations from other songs, so they're not really that original