If Cho: Eat everything he launches at you, Q his ass after his speed steroid runs out, W his ass after that and throw everything you can at him.
Your sustain is about his level, only you get money every time you heal.
If Rumble: Your W has low cooldown, use it to shield initial damage when you see Yorick walk towards you. Punish him for getting into your range By launching one E, turning on your Q and shoot another E at him while he runs away. Apply ult + ignite if necessary.