You're missing Rebels in there.
I've actually decided not to watch any of the movies in the lead-up.
I've maintained a near total media blackout on the new film. I don't know the plot, I know only a little of the casting stuff, I know a couple character names and vehicle/armor designs, and that's about it. I want to judge the film on its own merits.
I think the only thing I'll probably spoil myself about is finding out whether Han dies, and that's just so that I won't be shocked and taken out of the film. The last time I watched a movie where a beloved (arguably, my favorite) character died was Serenity, and it TOTALLY killed my enjoyment of the film in the moment. I had been absolutely riveted up until that point, just letting the film wash over me, like being on an awesome rollercoaster ride, and that one death just knocked me right out of the film altogether. So, to avoid THAT experience and otherwise be able to enjoy the film, I'll try to find out before I go in. But that's literally the only thing I don't want to be a surprise. Everything else, I'd rather just be a total blank slate for, and that includes not having a "But why wasn't it like the old ones?!" sense.
Over the years, I've come to accept that the different "phases" of Star Wars have very different tones. The first three films are basically a space fairy tale. The PT is...um...I don't know what, but it's its own thing. Clone Wars is (in my opinion) what the PT should have been (and I may have to revisit ROTS after I finish Clone Wars). Rebels comes closest to the vibe of the OT, but in its own very-much-an-ensemble way. So, I'll expect this film to be different, and I don't want some other flavor lingering on my mental palate when I consume the new film.