My husband and I only play together, so I am going to answer about feeding him his own cum. If he is doing me missionary once he cums I tell him "lay on your back!" Then I sit on his face like option 2. I push his cum, my cum and probably some ******** right down his throat. I love looking into his eyes as I do it.
Doggy style, I tell him to roll on his back and slide under my pussy. Then I lower my cum filled pussy on to his waiting mouth in an altered # 2.
If I am riding him I am usually feeling more dominant so I move up to his face and reverse cowgirl so he licks my pussy clean and rimms me.