For pizza I'm ordering for myself, its thick crust pepperoni & mushrooms- occasionally with onions and/or black olives- every time.
However, I'll eat just about any kind of pizza, and have enjoyed anchovies on more than one occasion. Godfather's Pizza used to have them on their loaded pizzas, as I recall.
The major caveat, though, is that I have MAJOR, asymptomatic sodium-dependent high blood-pressure...the worst my doctor has seen in his 40+ year practice. So if I'm going to "sin", I prefer to do so with my favorite recipes.
So if someone brought a pizza w/anchovies on it, I might take a piece or two if I were hungry-hungry or had been very good about my diet, but otherwise, I'll probably stick to my home-made trail mix.