Higher up the ladder you go in any organization, the more likely you are, to find the dark triad of personality - narcissism, psychopathy and machiavellianism [1]

There has also been academic interest in exploring with narcissistic leadership types and their impacts. Here is a review of other studies examining these and impacts, frameworks for future studies etc. [2]

[1] - https://en.wikipedia.org/wiki/Psychopathy_in_the_workplace [2] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5437163/