The steroid "Mount Rushmore" is probably Clemens, Bonds, McGwire and Palmeiro.
Clemens and Bonds were killing it before the 'roids.
Palmeiro was a .300 hitter before his power explosion. McGwire averaged about 35 HR his first 6 seasons.
All 4 were pretty damn good before any "help". How much was Mantle, Mays and Aaron helped by the energy boost?