Well, you are naming Lou Reed and Nico, two of the best artists in the history. HipHop isn't all lyrics, I also tend to minimize lyricism (I'm not even english native), I listen to the music and you still have some of the best album in the world like Public Enemy's It Takes a Nation of Millions to Hold Us Back (absurd hardcore productions) or A Tribe Called Quest's The Low End Theory (which is peak boombap in my opinion).