Ok, actually familiar with all these franchises for a change, and I’d pick Bradley. He’s prolly the most capable politically and doesn’t need force, kinda like Palpatine….only he’s not as quick to murder his subordinates as the others, and wins, strategizes, etc.
He’s actually a well written villain, if you’re not familiar with him (and can overlook the real world political references).
Cobra Commander has cool stuff, but his army always winds up in jail in less than 22 minutes a day.