Reviewing through your inquiry, if you are interested in restoring content, I think you will find the following document helpful: Can Places or Content Be Restored after Being Deleted?
Or if you are interested in viewing content, in addition to the Document Management and Discussion Management sections you should also have access to ideation and personal/system blog management via your admin console.
That's great! Two more content types down. Specifically, I was looking to view uploaded files. I noticed those were not showing up in Document Management. Is there a way to see them too? (Along with Videos, Events, Polls, and Status Updates)