Useful article on Token Classification

"The cryptocurrency classification tool is a table that comprises 5 categories — Mode of Payment, Store of Value, Protocol Improvement, Coin-as-a-Service, Utility Token— which are the functions they serve. Each category is unique but they are not mutually exclusive i.e. a token can serve multiple functions."

See: https://medium.com/swlh/a-better-taxonomy-for-cryptocurrencies-cbffd2e1b58c