Joe Columbo's son said in one of his interviews available on Youtube that it was Gambino his father was very close to.
His Biographer said Colombo could've joined the Manganos und Carlo but joined the Profaci's, because he wanted to find out the reason and the killers of his father.
This was brand new information to me and pretty interesting I might add. Colombo was a capable guy and maybe Joe Magliocco knew that he could get close to Gambino but he didn't understand the extent to their relationship. I don't think many of us knew this.
