Here are some tips on how to organize your docs in each of your channels.
Each new doc can contain multiple docs under it, so you can easily create clusters of information around specific topics.
For example, if you create your company handbook like above, the first note can contain all internal links to the handbook docs, that are nested inside it.
You can also choose an emoji for all your docs, to better illustrate their content.
For fast reordering, you can drag and drop your docs.