If you're really looking to broaden your horizons from Ghibli and Ghibli-inspired movies, which nearly your entire list consists of, try the following:
Kara No Kyoukai (Garden of Sinners). There are 7 movies in total, for a total movie length of roughly 9 hours.
This is a beautifully animated, highly-complex film. It can be dark, and violent, about as far from the tame fairy-story worlds of Ghibli you can get, but beneath it all is an engrossingly complex story that will require your utmost dedication to unravel. Do not watch if you are the type of person who expects everything to make sense from the get go, as the experience is a slow burn as you go through the 7 movies, slowly stitching together how many seemingly disparate events fit together.
You can watch the movies in the order they were release, or chronilogically: 2, 4, 3, 1, 5, 6, 7
There are also two "episodes", a remix and epilogue. The remix is essentially a recap of movies 1-5. The epilogue is an attempt to bring (imo, unneeded) closure to the story, and would be watched last. Both are very, very optional to the experience.
If that's too far outside your comfort zone, then the following suggestion is only slightly removed from Ghibli-esque movies:
Kino no Tabi: The Beautiful World - Byouki no Kuni: For You
This is a short movie that is typical of an episode from the Kino: It's a beautiful world tv series, just with higher production values. If you're unfamiliar with Kino, it's basically a Gulliver's Travels type of tale, with many different "worlds" visited by Kino along her journey, all of which the story generally uses to highlight some particular aspect of human society. One of the prevailing plot hooks is that every world Kino visits has two images: the surface image, and the usually darker one beneath that exterior, and the world visited in this movie is no different. A nice thing about the stories related to Kino is that there's generally very little moral preaching. Kino is not some shounen hero champion of justice.