Luffy and Zoro obviously miles in front
Then Law, and again for his part he's miles in front of the rest of the competition. He was a main character for 150 odd chapters. Has faded quite a bit since, but still is expected to play a fairly large role in the future compared to the other Supernovas.
Kid is next. Having said that, a lot of his stuff is based on what he's expected to do (and Onigashima is giving credence to that, to be fair) not what he's actually done, which is negligible.
Then we come to the three with potential big roles in the future. Bonney's the standout, given what Sakazuki said about her, her relationship with Kuma and her being involved in Reverie. That suggests an important role to the wider One Piece world well above what most Supernovas have. Drake's obviously got his SWORD thing going on, plus Oda's been giving us little snippets of his past with the Law flashback. Suggests he's got a decent plan for him. And Capone is the great surprise of the Supernova's, had a big role on WCI, could very well be coming back with his sister-in-law (and from the looks of things Gotti's new wife) to finish the Elbaf plot. Although I don't actually expect Capone himself to play a big role there, but he'll at least be there.
I struggle to separate Hawkins, Apoo, and Killer. If anything Killer gets a wee boost for being on Kid's crew and thus will be around with him after the arc. I don't have any expectations of Apoo and Hawkins outwith Wano, where they haven't had much of a role either. I think these guys very much show off the unplanned nature of the Supernovas, they aren't really anything more than powerful rookie pirates, and they've fastened their horse to the wrong chariot in Kaido, who's getting defeated now.
Urouge is dead last. Doesn't have any real, solid set up for the future, hasn't played a role in the past. Shame, because I love him. The only thing I can say for him is that because there's nothing big seemingly set up for him he's a card Oda can play at any time. And maybe, at a push, some Moon history stuff given he seems to be Birkan.