I buy my socks from the Diabetic Shoes Hub. My favorite pair are the EcoSox over the calf ones. They are lightweight and stretchy! I also wear their compression socks when travelling. I'm not sure if compression socks will help with your swelling but you may want to look into it and ask your doctor.
Here is a link below to the socks I was talking about.
Also, if you have excess swelling, they have socks to fit wider feet, all the way up to 6E and Men's Size 16 shoe.