Mafia Inc about the Rizzutos Andre cedilot and Andre Noel.
The sixth family by Lee Lamothe and Adrian Humphreys.
The wolfpack by Peter Edwards and Luis Horacio Najera.

All 3 are about OC in Canada and give great detail about inner workings.
Honestly there has not been alot of good books about current state of American Mafia since Selwyn raabs the five families.