If you are keeping up with ohsam! and/or spn_kinkmeme, you'll already recognize these authors.

Lennelle (Livejournal, Fanfiction, AO3)
hugglewolf (Livejournal)/huggles (AO3)
HazelDomain (AO3)

These authors have all come on the scene in the last 12-18 months and produced some really good fic, much of it hurt!sam.

I've been seeing a lot of my favorite writers drop out of the fandom, for whatever reasons. I really appreciate the new folks taking up the torch, go check them out!