https://en.wikipedia.org/wiki/Einsatzgruppen
>Many Einsatzgruppe leaders were highly educated; for example, nine of seventeen leaders of Einsatzgruppe A held doctorate degrees.[42] Three Einsatzgruppen were commanded by holders of doctorates, one of whom (SS-Gruppenführer Otto Rasch) held a double doctorate.[43]
So perhaps I was wrong to say majority, but a good portion.
As an aside, what a bizarre thing to nitpick. Why does this fact bother you?