Guess that leaves out both Adam Smith (philosophy) and Karl Marx (sociology/philosophy).Adam Smith did quite well.
Yet since he predates the development of the modern science of economics, it's hardly a fair comparison.
Karl Marx on the other hand... yeah, I'd say he's just as disreputable as Wanniski.
Glad you agree with me that a degree in economics is no requirement to sound economic thinking. Therefore, Wanniski is quite sound. As for you . . .