Character maps can list the corresponding value of a certain document in order to decipher a foreign object. These can be found for astrology, hieroglyphics and foreign languages.
Navigation maps are maps used to detail a route or a plan needed to take in order to get from point A to point B. You can notice these maps being used in GPS systems in cars or perhaps the Lewis and Clarke Journey to explore the West in early America.
Lorenz Curves can show how much a certain group of people can use of a whole while in turn showing the rest of the group without listing it. You can also add an average line to the graph.
Nominal Area Choropleths take an area and create a map detailing a certain piece of data and portray it upon the geographical map like this one on Florida.