Sweden: These are called Tunnbrödrulle (flat bread roll)

Chile: These are called Completos (complete ones, the whole package basically. A hot dog with everything on it). They are also commonly served with Chilean-style mustard and Ají, a spicy sauce.

If I had to choose between them, I’d go for a Completo. Those things will be the death of me, but I will in the very least die happy