You might as well ask who won the Tour de France from 1903 to 1999.
+1. Drug use in one form or another has been going on for far too long to start mucking about with historical records now. Taking the wins away from Armstrong does nothing to benefit anyone else. Andy Schleck doesn't count himself as a Tour winner (OK, no-one else does either)...
Apart from Lance, we have in recent times:
Ullrich. Doper, and who says he wasn't on something in '97..?
Zabel. Admitted doping during the '96 Tour. But those were only green jerseys, so is that OK?
Riis (admitted doping during '96).
Pantani. I assume no-one's going to bother taking the '98 title from a dead man.
Indurain- well, there were rumours....
Fignon- admitted doping in his memoirs. And again, why take the title from a dead man?
Virenque....