Accardo. He shared power with Ricca for years, but my bottom line is that Ricca went to prison twice, Accordo never went to prison. Accardo "resigned" in '57 in favor of Giancana, but Batters still ran the show, stepped back in when Momo was exiled, and was the eminence gris until he died in '92.
Thats a good breakdown and logical evaluation of these two men...and I tend to agree with you on this.
Accardo had a much longer career than DeLucia, and to my knowledge, never served any prison term. He rode that rare wave that saw him float along the top-tier of Chicago's underworld largely unscathed for over 60+ years, since the Twenties.
THATS a huge accomplish!