Well for starters id read the chicago outfit,by Gus Russo

For starters in Chicago you did not have to be Italian to be part of the outfit although nearly all of the top postions and desicions were made by italians/sicillians,there was also not formal making ceromony as there is/was in NY between the five famlies,one of the main brains behind the outfit was Muarry Humpheries who was of welsh decent all the italian gangsters respected humpherrys as he always made money and was a political mastermind,he was opne of the main reasons why JFK got voted in as presidant.

Also Jake Guzik was the financial and legal advisor, and later political “fixer”, for the Chicago Outfit.Guzik was born in Russia but it did not stop him rising so high in the Outfit,Capone never looked at somebody by the colour of there skin he was one of the first people to hire black jazz musicians for his Chicago clubs long nefore anybody else in the country.

Also Sam Giancana for a time was partners with a black numbers guy he met in prison,although for a time they wre partners Giancana eventually forced him out of there partnership buy kidnapping him and forcing him and his familly to cross the border into mexico and never return.