I focus on RB every year because I know the traits that seem to translate to the NFL. Some players I've liked in recent years included Jeremy Hill, Karlos Williams, Carlos Hyde, Jonathan Williams, and Terrance West. I was thrilled when Karlos and Jonathan were picked by the Bills.
One stat that seems to be highly predictive is yards per carry against AP-ranked teams.
One stat that isn't predictive so much is YPC, which is a function of the OL blocking, quality of the opponents' defenses, etc.
I move players up and down as I watch game videos, not when some draft site says so-and-so is awesome. This avoids players being "famous for being famous".
Edited by Astrobot, 05 November 2016 - 08:48 AM.