It’s not the most common, but broccoli and/or spinach can go on a pizza.
There’s a place by me, one pizza is just spinach, cheese, and olive oil. No tomato sauce. This is actually a little more Greek influence than Italian.
Alex,cucumbers get turned into pickles. There’s a brining process where sugar, salt, vinegar, garlic, dill, and other spices are mixed together. The cucumbers are soaked in this brine, and they turn into pickles. It’s the vinegar that makes them sour.
Pickles never agreed with me, but they’re so big as a sandwich topping or a garnish.
I had the cheeseburger pizza once (no pickles), and it was okay.
My wife likesthe Hawaiian pizza with ham and pineapple, but she’s not too crazy about the chicken bacon ranch pie I like. But to each his own.
Just because you never heard of a topping on pizza doesn’t mean it doesn’t exist.