Here's another good example of a fella who I think falls into this category.

For many years, Long Island’s John Del Mastro doubled as a businessman and devout Lucchese Family associate. Ostensibly, Del Mastro was just the owner of a very successful fence installation company, based in Smithtown. But in reality, by the early 1960s, both local and federal law enforcement authorities had determined that Del Mastro was actually a coveted and highly influential Mafia associate and close aide to top bosses within the Lucchese borgata. He rubbed elbows with the likes of Andimo (Tommy Noto) Pappadio, Antonio (Tony Ducks) Corallo, Joseph (Joey Narrow) Laratro, Aniello (Neil) Migliore and others. Heavily involved in both Republican and Democratic Party politics, and a big donor, the influential Del Mastro was considered a key “link” between the mob and local government, who helped pave the mob’s way for the infiltration and expansion into Suffolk County's construction rackets.