I'll throw tiddlywiki into the ring for the 'list of things to try', it is pretty neat and I like how it is all contained in a single file and it's really fun to explore inside of it.
But I also landed on bookstack. Weird how it turned out that formatting my stuff like a book would be the best format as opposed to all the super cool different ways of thinking that are possible with new-gen apps. I'm not sure if books are just superior or if I just personally am really wired to books, but I landed on it after evernote, onenote, obsidian, joplin, and Notion.
Basically I am using tiddly as a zettelkastan where appropriate and bookstack for things that are more finalized.
I really wish my team would switch to BS instead of the unorganized knowledgebase soup with inconsistent tagging, zero curation, and bad search engine (servicenow knowledge). omg what if we had an actual procedure manual instead of just hoping people will enter the right search terms to land on KBs they dont even know to search for. now THAT would be revolutionary.