Here we have fics that don't actually pair Discord and Celestia together, but they have significant relations/interact a lot with each other. You know, stuff that isn't Dislestia, but with your shipping goggles on tightly you can still see it if you squint and wish hard enough.
Character studies, friendship fics, non-romantic adventures, humorous fics where both live in the Castle and have to tolerate each other. You get the drift.