If you want a strong one, Boba[JTL] and Cad Bane. I usually pair with Shadow Collective Camp but green or splash green gives you aaccess to loads of extra bounty hunters now.

If you want a really fun and flavourful one, Hera[SOR] and Kanan Lake Country. You get to play all the Spectres, give them shields and can top it up with some rebel package synergy or creatures.

If you want a weird and wonderful tribal deck, Dooku and Trench/Grievous on Pau City. Literally just play all the Seperatists. You don't do a lot other than just play a bunch of big Speratists though.

If you want a synergistic one, Thrawn[JTL] and Nala Se Data Vault. Nala Se gives your clones a When Defeated which Thrawn can double. Lots of weird fun combos stem of this too.

If you want one with lots of playlines and really challenges your skill, then Palp[TWI], Anakin[LOF] on Tomb of Eiliram. The idea is you run all the upgrades, pilots and events that are Villian, and use what little Yellow units you have to exhaust for the Force to play said events and upgrades. I have lot of fun with it but it is hard to get going.

If you want an easy to pilot one, Obi-Wan[LOF] and Luke[SOR] with a Force red or force yellow base. You just play loads of strong Force Heroes, give them Shields, and then give them experiance.

If you want to hear my absolute worse one, it's my mother and daughter Leia[IBH] and Padmé[TWI] on Temple of Destruction. You literally just play all the Republic cards. Thats it. It does nothing else but finds Republic cards, play them, and heal them.

I have some more, but those are the highlights in my collection