There is no pope of Protestant churches. In fact, you could say that one of the main reasons for the Protestant Reformation was not to have a pope!
No, Billy Graham is not the Protestant Pope. The title of Pope is specific to the leader of the Roman Catholic Church, while Billy Graham was a prominent Protestant Christian evangelist and not a pope or a leader of a specific Protestant denomination.
No protestant churches do not have a single leader like the pope.
Protestant
No, the ranking is a Catholic position.
There is only one pope at a time and he is Catholic. There are no Protestant popes although, technically, the pope is the spiritual leader of them also.
A group of German princes were protestant. The term Protestant originally referred to these German prince who were not loyal to the Pope.
No, despite what some Protestant and Pentecostal groups might say, the pope is not a liar.
The Protestant Revolt, or Reformation.
Protestant.
Cardinal is the next step down in the hierarchy from the pope.
Catholics call it the Protestant Revolt while Protestants call it the Protestant Reformation.