My all-time favorites are Paul Kasemir and Travis Rosen. I LOVE THEM. Both incredible and consistent athletes, and seem to be nice guys as well. It makes me furious that Paul Kasemir has not been called back for ANW 9 (the 2nd year he wasn't called back). I really don't get why. He has been a very strong performer for all the years he's been in ANW, does far better than most rookies every year, and he's got a serious shot at conquering Midoriyama. This alone makes me not want to watch ANW 9 anymore.
Other favorites of mine are Jessie Graff, Nicholas Coolridge, Geoff Britten, Elet Hall, and the underrated Brett Sims. I also like Ryan Stratis, Chris Wilczewski, and Jamie Rahn, who all seem to be all-around nice guys. I don't care much for rookies whom they give so much airtime to show backstories but end up failing in the first obstacles. I get that they need to feature new competitors too, but I would personally much rather watch the veterans and long-time competitors whom I've been rooting for, have a real shot at Midoriyama, and have made me tune in to ANW in the first place.