The Classical Greek philosopher Plato discusses five types of regimes (Republic, Book VIII). They are Aristocracy, Timocracy, Oligarchy, Democracy, and Tyranny.

He also explains how each one devolves to the next stage. Oligarchy becomes Democracy, and Democracy becomes Tyranny.

Plato's Republic.

The artist who depicted Plato in red and Aristotle in blue did a good job there. Same colors used by Republicans and Democrats.

The Classical Greek philosopher Plato discusses five types of regimes (Republic, Book VIII). They are Aristocracy, Timocracy, Oligarchy, Democracy, and Tyranny.

He also explains how each one devolves to the next stage. Oligarchy becomes Democracy, and Democracy becomes Tyranny.

Plato's Republic.