Everyone has their opinion. I follow tips from hardcore biking friends. After the chain is clean use white lightning lubricant. It is a semi solid that dries to leave a wax coating. You need to start with a clean chain as the logic is that it protects the chain and keeps grime from adhering. Most bike shops carry it and I have seen in at Wally World as well.
Careful with the application. If you're worried about aesthetics, keep it off your tires. It dries opaque white- quite visible on black tires. Once dried its a pain to wipe off rubber.