Anderson did take steriods I believe. I remember there was a coverage on Outside the Lines about it. I know Rios, Santiago, Bernard, etc.. took them but I would question..
L.Gonzalez
R.Gant
Tejada (I might be out of ass on this one but IMO he is)
Giambi (Jeremy)
Clemens damn well isn't on the juice. That's god given ability.