These are the specific traits which allow them to reach the positions of influence or power.
Those are the winners ofc, while there are innumerable losers along the way.
For the record, I am determinist-light. It's clear that some people are just born with sociopathy or low IQ, irrespective of their life experiences. These people would benefit immensely from early intervention.
Some people are commenting people would fake/dupe the testers. Sure, some would be able to. But many (i'd wager the vast majority) wouldn't. People don't realise how difficult it actually is to fake being normal. The only reason people with cluster B seem to dupe so many is because we live in a day and age where they are able to jump from relationship to relationship and cut ties with the people they've mistreated or "found them out".
If someone hits the signs for a future serial killer, block them from ever getting any sort of job beyond menial work.