Sasuke still kills them.
1. I can argue Gai not being able to penetrate Madara's PS and kill him in one go with his strongest tech. We can forget about him doing anything meaningful to Sasuke's Susanoo. Thus he becomes a non factor.
2. Obito would be forced to use Bijuu Dama or Shinju to beat Madara's PS, and Sasuke can cut down the tree before it charges the BD, and someone far weaker than him already one shotted the Shinju. Obito only becomes a factor if left unchecked. If Sasuke watches him the entire fight he literally can't do anything to hurt him.
3. Hiraishin's usefulness goes down when Minato won't even be able to properly react to Sasuke's attacks. Whether they are against him or his teammates. And he doesn't even have rikudo's power like Obito and Kakashi do. He's useless.
4. Kakashi is the closest thing to a threat here, but considering Sasuke's Susanoo is far stronger than his, actually has an offensive technique that rivals Bijuu Dama, but far far more focused, and has the abilities needed to deal with Kamui.
Ameno from the jump=The death of anyone who isn't Kakashi or Obito due to his regen, and that's only if he doesn't use it with his Susanoo, cause if he does, then Kamui is the only thing that lets Kakashi survive. PS then rips through Kakashi's PS and rips Gai, Obito and Minato to pieces. Any and all Kamui attempts are easily dodged.