Rinnegan sasuke relies heavily on buff ninjas for damage and supports to keep him alive. His kit is weird to say the least as he is built to be a tank who c*so dish out damage but dies rather quickly and has next to unreliable damage given that his main source of damage comes from his standard attacks when explosive mode is activated. Heavy control ninjas go good with sasuke to prevent him from being targeted too often. Buffers and shielders c*so be a great help to get him through the rounds and deal out massive amounts of damage. Healers are good and all but not as reliable. I would imagine shisui and anbu itachi go great with him. Besides those two mentioned, the really great team of rinnegan sasuke, itachi susanoo, and madara founder would be the dream.