For many decades, there was a very strong and significant presence of Jewish gangsters who worked hand-n-glove with their Mafia contemporaries, not only in New York City but throughout the nation as well.
"The Jewish Mob - Mensch of the Underworld"
https://thenewyorkmafia.com/the-jewish-mob/My experience with several Jews says that most were Mavens and the best were Mensch. Would you agree with that?
100%
Many Jews, legit or otherwise, were/are sharp guys. Good at business, good at hustling, and back in the 1920s-1950s era, also good at killing. lol. Even without a formal education, many had good "cups" on the head. Thats a word I've heard older Jewish friends of mine in NY use to describe sharp guys with brains.