Ninja Exam: GNW Neji, Sage Naruto, Ino, Mei, Ao, Iruka, WB Asuma, GNW Kankuro, Hinata

Survival Trial: Most healers are useful as they keep you team alive over the course of trial, you can just use your strongest ninjas for the rest and adjust as needed.

Strong Approach: Depends on your main, difficulty and which SA you are doing, but it's important to have ninjas who can interrupt, acupuncture or immobilize to minimize damage taken.

Hidan SA: Kabuto, Tayuya, Kimimaro, Hinata, Sakura, Tsunade
Hanzo SA: Kabuto, Sasuke, Suigetsu, Neji, Guy, GNW Sai