No question about that.
Of course, "Fat Clemenza's" photo doesn't appear on the chart because Paramount and Richard Castellano couldn't come to terms. So, perhaps, FFC was taking a shot at the recalcitrant Castellano by listing him as "Fat Clemenza."
TB, maybe you can confirm my thought.......Although I pointed out the "Fat Clemenza" nickname on the org chart, I always thought that it was a derogatory nickname, and the Mafia didn't do that. Nicknames were given for prominent features, such as, Vincent "Chin" Gigante, and various skills, abilities, or derivations.