Clarence "Clancy" Ross is a fine example. Another would be Steve Reeves. If you think otherwise, that's fine.
And yes, I am more than aware of how all this works. One need not worship at the altar of drugs to take part here or is that now a prerequisite to joining? I just happen to think, not feel, that sans their little helpers few, if any, competitive bodybuilders would be competitive today. The genie has long been freed from the bottle but again, that doesn't mean I think its right or healthy.
So you think, not feel, old-timey musclemen perhaps eschewed little helpers altogether. If not, that's fine.
One need not worship at the altar of drugs in order to partake, this is true. Although one, too, must surmise that sansing said genie consequently sanses the professional contest (fanbase/G&Os thereby sansed as well). Nary a doubt, fellow enthusiast.
Others may disagree, I shall neither fret nor languish. No man is an island. Ask not for whom the bell tolls, ask what you can do for the tolling bell.