List of Teams by Phase (STR)

Yoda lead plus that one light side faction-less toon, ezra can theoretically do what your rjt can.
Search nukin's newest video on youtube. @Anrath

Random teams I use in T4 that may help you that probably are not on that list.

P1. Farmboy Luke + 4 multi-attackers. His tenactiy lead allows resist of defense down and is more than Yodas frankly. My personal team is CLS RHan Leia 4*Visas. Can also use Sabine, Ezra, or Pao. Can use Chirrut or another healer instead of Visas. Scores 800k-1.2M depending on RNG. Except for CLS none of my guys are higher than g9.

P2. Sidious lead, Nihulis, Savage, Palp and Sion. Sion does insane damage. He does regular damage + 38k PER HIT with pain. With Hatred his 3rd ability can crit for 68k + 38k. Save Nihilus drain force for when the adds are up and you can get off 3 Annihilates. Does 2-2.5M. Sid is a bit squishy and sometimes you need to clear the damage buff from him. Even if there are no adds use Palps aoe everytime you can because it gives offense up.

Edit: One More: P3. Similar to Chex mix I call it Sith Mix. Sid lead, Sith Assasin, Savage, Vader 4* Visas Mar. Use Visas 3rd ability and then stand alone with her next time its her turn. Repeat with Savage and Sid if you can.

Must not have looked hard..
RJT for p1
Pheonix or machine gun leia for 2 or wampa
Chex mix for p3
Nightsister/FO for p4

I've seen those, but there has to be more than one team per phase.

P1 literally RJT. Proven and only one used.
P2 maybe thrawn and troopers so there's 4 I've listed.
P3. Literally chex mix. Proven and only one used.
P4. With nihilus nightsisters. With sion FO/Phoenix. Only traya, whatever is left in the tank.
Sooo there's 8 teams. Plus whatever you have left.

Here's a list:
https://drive.google.com/file/d/1nY3vdMW5gfFb5aYW-vebaxJnpoM7anAz/view

I'll add that Big JC (Thrawn, Hera, FOO, JC, Jawa Engineer) is an option for P1 if you're running a lower tier and spend a day or so on Nihilus. Not going to cut it for Heroic though.

Nightmare and bounty hunters do 1-2% each as well in P4

There are a few further suggestions in this guide:

http://gaming-fans.com/swgoh-advanced/sith-triumvirate-raid-guide/

Also the Alliance of ØRØ have created a very detailed guide with several team suggestions and tactics for each team in each phase. The most detailed guide, I have seen.

@nobodyfromjakku and @Waqui Thanks for the help, this is going to be great for my guildies to have something to work towards.

Good luck, and happy farming :—)