Someone already mentioned Logseq, but I'm really enjoying Obsidian for my note taking needs. It's similar, but I have found Obsidian to be very nice. Not FOSS, but I really like what the devs are doing.
Yeah I've tried One Note, Evernote and notion before coming across Logseq and Obsidian. I'm really enjoying it. I haven't given Excalidraw much use in obsidian but I may do so in the future.
It's a game changer for me. Obsidian plugin allows previewing these drawings in notes, and we can also link notes in the drawings. The built in canvas feature is simply bad. All it needs to do is center the text inside boxes. Wish the devs made it open source and this problem could get fixed but apparently they don't believe in it.
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and a few others, but I keep coming back to obsidian. Currently self-hosting it using one of the plugins, that helps me easily sync between pc, MacBook, android and iOS.
Nextcloud and Janitor plugin. In my opinion, obsidian sync is not worth it. You have many ways to sync your data across different devices. Even using GitHub or Sorj.
Edit: For my usecase, Janitor plugin works the best. You could try it.