A. E. Van Vogt wrote a lot of super-beings with psychic powers that in his "utopian" fiction were destined, biologically superior ruling classes and in his "dystopian" fiction were misunderstood superior beings who would have been destined, biologically superior ruling classes and instead killed for their psychic powers because they scared ordinary humans to much. In almost all cases, Van Vogt's much storied psychic powers were generally genetic and defined a new race more "elevated" than baseline Homo sapiens.

Also, I think Stross overlooked another Campbellian thread that tied A. E. Van Vogt to Campbell's publications: A. E. Van Vogt wasn't as central to Dianetics as L. Ron Hubbard, but did play a major role in pre-Scientology Dianetics (per Wikipedia that was including early involvement in some of the "alternative accounting" tricks that kept the company/franchise out of a couple of bankruptcies and eventually led to Scientology though he was semi-retired by the time it started to turn into that).