I never played the game at a high level or was around the juice etc...
But here is a list of people I suspect.
Todd Helton. Totally falling off the face of the earth overnight, I know Crohn's disease is pretty evil, but he is hitting .270 and the ball dies off his bat now.
Gary Sheffield: you know when he and Bonds were training together, he got some of the BALCO.
Roger Clemens? Don't kill me if I'm wrong, but I don't know how you pitch at that high a level at his age, I know he works hard etc, but look at him from say 10 years ago, same before and after like Barry Bonds and his swollen head.
JC Romero guy is just a shell of his former self in Anaheim.
Pudge Rodriguez
Rodrigo Lopez
Matt Clement
Kyle Farnsworth
Master Splinter aka Randy Johnson
I may be way off, and it is not all appearance related, I would love to hear what everyone else thinks, I wish I had more time to put thought into this, probably a lot of relievers, utility men on the juice.
I thought John Kruk made a great point on ESPN radio the other day, saying the juicers are probably more of the guys trying to hold on, vice the big stars