It was more a linear organization than a hierarchy.

Everybody was shooting everyone during the bolita wars but after that the Trafficantes were the boss. First Santo Sr. and then Santo Jr. All the other families in the core group were pretty much equal, and rank really just depended on how close you were with the Trafficantes. Each family kind of had a senior member representing them, such as the Bedami's had Ciro Bedami, the Lazzaras had Augustine Lazzara, the Scagliones had Al and Nick Scaglione, and Diecidues had Alphonse and his son Frank Diecidue. All of those guys had sons and cousins and nephews who would report to them and then the senior member(who typically grew up with Santo Jr and was related in some way) would speak to Trafficantes if needed.

You could technically call those guys "capos" but again i dont think they cared much for formalities.

Frank Diecidue and Santo Jr were actually pretty close rivals. The Trafficantes and Deicidues had tensions going back a long time all the way to their fathers day and it carried over to their sons. Frank Diecidue in the 70s and 80s ran the Castaways Lounge on Kennedy Blvd. It was actually owned by Joseph Lazzara who was the son of Augustine Lazzara but Frank ran the place. Frank had a large crew and probably the only crew that could threaten the Trafficantes. Santo Jr, who spent the majority of his time in Cuba and Miami, basically spread the word around that when he is not in Tampa, Frank Diecidue is the man to see. Santo did that to keep the peace, so i guess that might be considered an underboss position but i doubt it was that formal.
Castaways lounge later became Lazzara liquor store and was still in operation until it was sold a few years ago.