To be honest, u got a good selection of ninjas to pick from.

You should really use naruto six path as u postion 1. From there u got several ninjas to put around him.

Kakuzu akatsuki creation is good in any team. Buff removal, revives and buffing teammates on revival.

Sasuke is a nice support, with either fear or chaos, depending if u fight mostly immune ninja or not.

Madara Edo release is good if u can get him 4* eventually.

Indra is nice with irremovable paralize and ignite + his mystery is decent.

Tsunade could be nice if u worried about getting blitzed

Karin is all around prob the best healer we got atm.

Minato edo is decent with barrier if u dont wanna get MAdara edo release.

U can really pick and choose between these. Or anything else really. Naruto is a beast and works with most.

As of summons, u should look into getting some combo summons too(King of hell, Crustation, Clam, Gamariki) For the most part, i value Gamariki highest with Six path naruto.