I know the question wasn't directed at me but I just want to answer on GP
Off the top of my head I would say Crawford, Pacquiao and Keith Thurman. I think there is an African dude out there that holds the IBO so he can go and get that one too.
You can throw Joel Ortiz or Boots Ennis in there but those two need to fight each other before they deserve a title shot at 147 in my opinion.
He could also give Porter a rematch, I think Porter is deserving of a rematch (its mind boggling that them cats didn't have a rematch clause lol). And that Ugas fight would be a good one too. I think Ugas is deserving of another title shot.