Knowledge Transfer Documents for Typical Drupal Project

Recently I came across with this question, “What all documents required for proper knowledge transfer of any Drupal project"? 

As usual, I went to search on but failed to find any document list so I started making it on my own.

Considering the team experience level may be some of the documents are irrelevant but here in my case I have a bunch of newbies in the team. So I preferred it simple and stupid.

So here is the list: 

 1. Information about Infrastructure: Server/Environmental Details (Dev/QA/Prod/)