I have varying thoughts on what I consider the “true” Star Wars saga. Sometimes it’s just the OT, sometimes it’s the OT and the prequels, sometimes it’s Disney’s “Skywalker Saga”, and sometimes I even side with BedeHistory and only consider the original movie canon. It varies depending on my mood, and whether I’m taking the theatrical cuts or fanedits into consideration.
However, in general I tend to prioritize the OT above other pieces of Star Wars media. Those movies are the definition of cinematic classics (especially the original movie), and to group them together with the mostly mediocre franchise they spawned feels like a disservice. Some of the Disney installments can be decent, but they will never live up to the magic I felt when I watched the original classics for the first time.