I think most of these were recognised as great drivers and all deserved a win. But take someone like Surer. Fastest lap and 4th place Brazil 1981 in an Ensign. He was almost 2nd at Brands in 1985 deputising in the 2nd Brabham. Otherwise never had a top drive. And that was after breaking his ankles twice in 3 years in South Africa!
I followed Surer in F2 and was sure he would be at the very least a multiple race winner in F1.
Some of those ankle injuries must really take a toll.