The original and prequel trilogies are worthwhile viewing. The sequel trilogy, however, presents a different case. While George Lucas provided story treatments during the 2012 sale, these were ultimately discarded. The sequels also marked the end of the Expanded Universe, removed from canon to allow creative freedom for filmmakers. Given that the stories deviate significantly from Lucas’s original vision, is there really a compelling reason to watch them?
I would add Rebels. First season is a liiiiittle more kid friendly and toned down than it really needed to be, the rest of it is fantastic and finished the story of Darth Maul.