I just published my newest project that visualizes #orgdown ( #Emacs #orgmode syntax) files in a web browser:
https://codeberg.org/publicvoit/orgheadingnetwork
Similar functionality is included in all sorts of tools like #logseq or #obsidian. I personally haven't found a spot for it in my daily workflows but with that project, I may decide to play around with such visualizations any time.
Have fun