Thought I would offer my team I used for palpatine. Didn't lose anyone, my focus was one of the RG, EP, second RG (he was low so thought just easier to finish him) and then Vader.
Hera G8 unique omega'd
Zeb G8 unique and basic omega'd
Ezra G8 no omegas
Kanan G8 unique omega'd
Chopper G8 no omegas
Like most people I would recommend maybe gearing/getting some maxing out abilities like Ezra/Chopper uniques. I had decent RNG, palpatine only got two goes at using his stun special and got 3 both times.
Link to my phoenix