Here is a macro-view of the hierarchy of debt/money in the Western financial-monetary system; plus two image extracts of papers relating to the hierarchy of money - for which links are provided. Any comments please?
http://www.perrymehrling.com/wp-content/uploads/2015/05/Lec-02-The-Natural-Hierarchy-of-Money.pdf
http://cas2.umkc.edu/economics/people/facultyPages/wray/courses/Econ%20601/readings/Bell%20The%20Role%20of%20the%20State%20and%20the%20Hierarchy%20of%20Money.pdf