If you like El Goonish Shive, I think you might like Dungeon Meshi, and also O Human Star. They're all three different situations entirely, but Dungeon Meshi has the same earnest portrayal of neurodivergence and the same sense of responsibility to its characters and its readers; and all three have that incredible and sometimes painful compassion for their characters. Dungeon Meshi's kinda long, though not One Piece long, and having recently concluded you can also rest assured it is finite and has an ending as intended. O Human Star is much shorter, much more freely available on its own site. While it lacks in what one might say are obvious warnable content, it does have a forking/cloning situation somewhat coincidentally a bit like Elliot's and Ellen's, and I know one person at least who cannot deal with forking content; there's one death, but it doesn't stick, and is what sets the story in motion; and there's self-harm scars but it's plot-relevant that they're not talked about, much less actively engaged in creating. That said, it's intense. I know only one person who's read it through without having to take a break just to come up for air, and at eight approachably short comic chapters, that says a lot. Personally, I didn't get through the first chapter before I had to lay down and sob uncontrollably. My wife managed to make it all the way to the middle of chapter eight before she had to stop and take it in, and another friend made it to chapter seven before they had to pull out for a bit. It's a lot.