Quoted from Catch86:
Of course there are a few Pizza places that make awesome pizza but that's a different matter. Oh and don't even get me started on what a Hamburger pizza should be. I love hamburger pizza. Different states have different ideas of what that means.
I've had 2 types and I don't mind either, and have actually made both. The "traditional" type is tomato sauce as the base, mozz/cheddar mix (70:30 probably), finely ground beef, yellow onions, chopped bacon.
The other type I've made uses a ketchup/mustard (to taste) base, large chunks of ground beef (to simulate the patty), shredded mozz/cheddar (50:50), yellow onion, chopped bacon, chopped pickle spears. The key is not to use too much ketchup or it'll overpower the pizza. If you squirt on thin lines, (no need to spread) it works out well.
I know it sounds kinda wacky, but it's pretty tasty. Reserved for a thicker style crust that can hold all of the ingredients. The first type I make on a thin crust like most of my other pizzas.