I tend to use https://www.omnigroup.com/omnioutliner/, but workflowy is especially useful when I need a list to be shared.

I also like mermaid (https://github.com/knsv/mermaid), so I created a small rails app (https://github.com/juliend2/metaglue) that uses mermaid as the graph language, and it generates an SVG graph in realtime. I really like it and use it as a kind of brain dump for various subjects. The idea behind it is to collect any kind of data (bits of knowledge) and mash them all together inside a common graph.

I'm a fan of workflowy too. As a vim user I was also very pleased to discover that vimflowy [https://vimflowy.bitballoon.com/] also exists.

I wish for something more sophisticated than workflowy, but I can't stop using it!

Workflowy is a list manager or am I missing something?

that's an excellent option