(US) I've been to gas stations in big cities, small towns, little collections of buildings that have no official name but they have a dollar general and a gas station, etc...
I've seen several kinds.
Single hose to dispense 87-93 ("normal") gasoline, and one for diesel
One hose for normal gas, one for diesel, and one for high-ethanol
One for all gasoline types and one for diesel
One super fancy stainless-steel-clad gas station that looked like something from retrofuturism had 5 hoses, one each for 87,90,93, e15, diesel, and the farthest end pump had a line for kerosine.
