Against those team, I use palp lead, vader, thrawn, bastila fallen.
As fifth I use nihilus against bugs, jkr, DR without malak and against padme if not everyone is at least G12 (because with piett you'll most likely trigger the bonus turn.
I use piett against DR with a weak malak (G11 or less) (so I can kill him in the last turn of MM) and against padme (same idea but with anakin). Against DR teams with a strong malak I didn't find anything that works
Only vader is relic in my squad (he's relic 7 now, but it also works will less relics (the bugs you can do with G11 vader)) The others are G11.
The zeta's I have are palp lead, vader unique and special and piett unique.