Products for a newborn with extremely dry skin

My son is 2 months old. He has had terribly dry and flaky skin since he was born. It’s all over his body, face, and head. We used free and clear detergent and dryer sheets. We’ve tried tons of natural baby washes. I use coconut oil on him daily. I’ve tried aquaphor and a number of different creams. I’ve used t-gel on his scalp thinking that part was cradle cap at first, but that won’t clear up either. Nothing I’ve tried works!