Best separatist team?

If you don't have Wat or Grievous your best bet would be Geonosians in my opinion

Geonosian Brute Alpha lead

Full Geonosians team. If you don't have them farmed then bunch of random separatists under Nute lead can also work very well, but we have to see your roster for more detailed answers.

"Hortus;c-2158843" wrote:
we have to see your roster for more detailed answers.

https://swgoh.gg/u/doxin/

"Doxin;c-2158854" wrote:

"Hortus;c-2158843" wrote:
we have to see your roster for more detailed answers.

https://swgoh.gg/u/doxin/

Just another side note, make sure you join a guild because you can get really good rewards from territory war, territory battle, and raids.