The top picks globally to counter Aurelion Sol include Samira, Kalista, and Jinx. These are all great at countering Aurelion Sol with win rates over 55%. Even if these Aurelion Sol counter picks are not picked opposite your position, it's not smart to play him into one of these matchups. They will often destroy Aurelion Sol.
Conversely, if the other team picks either Ziggs or Quinn, you should strongly consider choosing him, as he easily beats these champs with win rates over 55% against each ofthem.