How to get all keymaps for export to a personal cheatsheet?

[ivuorinen]

I currently have a small bash script that outputs some, but not all keybindings to a text file, but it's not very intuitive, or easy to reference (and discover, or re-discover default bindings).

As a lua noobie, I don't have the knowledge to create my own plugin or script to output something as nice as lua require("which-key").show({global = true}) does.

Could someone point me to a right direction to get all the mappings, groups first, with descriptions, that I could use to create a similar, but better organised markdown file I now have?