spout
That is a function of the faucet's design, the location of the faucet holes relative to the basin, AND the shape of the basin. Usually you do not have many options once you pick the sink and faucet you like. If the holes are not on the sink itself, the location of the holes in the countertop will be governed by where they can be made without interferring with other items and still allow the faucet to be secured and installed.