Which are the 5 types of government? Which ones are considered existent and which ones are not, and why?

A government is defined as an institution that is granted the charge of making and implementing laws, policies, and regulations for the betterment of the population within a specific jurisdiction or territory. It is responsible for maintaining order providing the population with their basic services and protecting their fundamental rights. The word government has a very vast history and is rooted in the formation of society.