Danny Marino was loyal to Castellano as he was apparently behind the hit on DeCicco in ‘86, lead by the Westside (and carried out by the Lukes). Not sure about John Gambino, but I would assume he was a Castellano loyalist too being how their families were all connected back in Sicily.

I think Gaggi was on trial in ‘85 and got convicted in early ‘86, so he was out of the picture by the time Gotti took over. But if he and Roy were still heavy on the streets in late ‘85? Who knows, but doubt Gotti would’ve been able to move against Big Paul. And maybe Roy would’ve whacked Gotti.