I'd be good with a Metal & Goth rock station in The Sims 4. I'd also be good with Hip-Hop, Punk, Reggae, Oldies, and most any other station possible. More variety in music stations the better.
As it is, I currently have my "Spooky" channel as my Metal Channel, the "Baroque" station as my Goth Rock Channel, one of the pop channels as my Hip-Hop Channel, and the Easy Listening channel is my Oldies/Classic Rock channel (all by me putting MP3s into the folders). Also added some Grunge, Shoegazing, Punk, & older Alternative songs to that channel to make it seem less like another pop channel and more like an Alternative channel.
This way my Metal sims can listen to some Bathory, Emperor, or Enslaved, my Goth sims can listen to Sisters Of Mercy, Skinny Puppy, or Siouxie & The Banshees, my Hip-Hop sims can listen to some NWA or Public Enemy, and some of my sims can listen to Supertramp, Rolling Stones, or Genesis on the "Oldies Channel" and sims into Alternative can listen to Husker Du, Babes In Toyland, or My Bloody Valentine.
