While I can't say I'm a fan of the direction post-2011 dubstep mainly took, I have a sizable collection of dubstep. If you're looking for something less mainstream than say Nero, but not completely unknown, I'd go with someone like Klaypexx.
Chinter's Will was always my favorite soThough, that song is pretty close to Electro House really, for some reason this song is an exception to my new dubstep rule. You can't go wrong with some Doctor P or Flux Pavilion, but they're pretty mainstream too. The
Monstercat label has a sizable collection of Dubstep, though most of their artists are multigenre producers and thus incorporate other songs into their Dubstep. I'm getting long and ramble-y but as I said, I've got a pretty large collection so if any of you want more songs link one you like and I'll find some like it for you. Dubstep's a big genre.