Empire Strikes Back still remains flawless to me
A New Hope comes second due its mostly linear and straight forward story, which isn’t inherently a bad thing
Return of the Jedi is third because the second half still features the best space battle and the best confrontation between Luke and Vader
The Force Awakens stays here at #4 because it brings new characters that are really interesting to watch; ones that you actually care about
The Last Jedi basically is the defining line where it’s still a SW film I would like to watch preferably over the SW films that come after in this list; it’s not OUTRIGHT awful, but it’s not really great either
Revenge of the Sith is uh, still a watchable prequel to me since it was my favorite prequel movie at the time as a kid
Rogue One may be a ‘different’ SW film, but oh boy, it arguably has the worst and least interesting characters since…
Attack of the Clones and…
…The Phantom Menace

Basically #7, #8, & #9 in that list stand out as being the most bland to me because it tries to have this epic story, accompanied by flashy action sequences, and super uninteresting characters.