I posted earlier why Joplin was close, but Obsidian was worth the switch. What I haven't found is a good multiplayer-mode. There are hints that this might work with Obsidian in the future and I am excited about that. I've used mem.ai which is close, but it's been buggy and also there's note a clear way to "zoom out" and look at all your notes, like a file explorer, graph view, or whatever. I imagine they might change this. But BoostNote looks very interesting. I appreciate the recommendation. I'll keep my eyes on it, for sure.