As to who the DeCavalcante boss is as of 2018, Wikipedia lists Charles Majuri, (Frank Majuri's son) as the new godfather of the New Jersey mob, though I doubt it is him who's running the show. The family has not been absorbed by either the Gambinos or Genoveses.

Without a doubt, the family with a large Zip crew would be the Gambinos, with the Bonannos coming a distant 2nd.