I kind've skimmed over the description of the Family Heads just prior to Vito's 'meeting'. Whoever they were, and whatever they controlled...whatever.

I was really more anxious to get to the gyst of the gathering, and Don Vito's speech (much more detailed of course, than the one vocalized in the movie).

What I found MUCH more interesting than the lives of Cuneo, Barzine etc....was the story of how the conference room was obtained via Vito's relationship with the banker.

Apple