If you want an overall driver as best, Foyt or Andretti, sorry European fans. Dirt , Indy, Daytona , 24 hours of Daytona , 24 Hours of Lemans, , all real world conditions. This was AJ.
Dirt car Champion, 3 years later Formula 1 champion, Indy, Daytona 500, 12 hours of Sebring,Pikes Peak,, real world conditions. Mario.
Of course this is all subjective.
The interesting part of Rally Racing is the use of spectators as guardrails. I guess they don't tear up a car as much as real guardrails.