The most common type of city government in the United States is the mayor-council system. In this structure, a mayor is elected to serve as the chief executive, while a city council, elected by the residents, acts as the legislative body. This system can vary, with some cities having a strong mayor who wields significant authority and others featuring a weak mayor with limited powers. Variations also exist in the council's structure, which may be unicameral or bicameral.
Usually a Municipal (city) or County.
City Corporation
common law
Council Mayor!
Council Mayor!
A monarchy
USA
Municipal (city) governments are most common, as there are more cities than counties, more counties than states, and more states than the one federal government.
The most common type of government worldwide is democracy, where the people have a say in decision-making through elected representatives. There are different forms of democracy, such as representative democracy and direct democracy, depending on how the government is structured.
monarchy
....is known as a "Civil Servant."
There is one type of federal government and it has been in existence since 1789.