In some circles it's accepted that "The Captains of Industry" are sociopaths, and there have certainly been a bunch of them in the newspapers lately.
So I'd say we only hear about these people when they're caught, but the ones who are caught are in the minority.
And I know of at least two who have not been "caught", and they are regarded as heros (except by their enemies). These celebrated millionaires destroy people's lives and the environment.
And you can't sue your boss for having a personality disorder (but if I had a law degree I would have tried).
I think most sociopaths, however, end up serving time in mental institutions or jail. Then they are released into the general public and the cycle begins again.
Some, I've heard, benefit from experience and change their lives in their 40s.
I've heard of people who behaved like perfect CEOs maybe twice in my whole life.
With the Internet, anyone can find out, to some level of certainty.
You type the person's name followed by "sociopath" or "antisocial" followed by "DSM".
Some websites are run by accredited professionals.
Like all polls, if you check 10 sites you will know the percent of people (who believe or don't believe this idea) to within an accuracy of +/- 30%.
100 sites gives an accuracy of +/- 10% and 1000 sites, +/- 3%.
That's why opinion polls interview many thousands of people for close political races.
Anyhow, the disorder of choice for world leaders is different. It's narcissistic first, followed by obsessive compulsive, followed by paranoid. My neighbor, with his "sense of entitlement", seems to fit the first category (so I put up a fence, to prevent his encroaching on my property).
In any case, good luck to the OP on his job hunt.