How do I get all files and folders on Dropbox Business account

I have reviewed Namespace Guide and Content Access Guide. The namespace guide explains the difference between a team space and non-team space accounts, but is listing namespace will include all namespaces (not recursive but top-level) on both types (Team space and non-team space) of accounts?

I am still not clear on the concept of team and shared folders (I have reviewed online resources). If team folders and shared folders both have a shared_folder_id and are almost similar, then why are they identified differenty. Nevertheless, my main objective is to walk through each and every folder recursively and for that I need a list of top-level folders which I assume can be obtained by listing namespace.