Your white GSD reminds me of a dog I had years ago. I lived in Oklahoma, and one day in Tulsa my boyfriend asked if I'd like to see Leon Russell's house. On the gatepost was a sign -- "free puppies". So we went in and chose a pup who had been fathered by Leon's white shepherd. Of course I named him Leon! He was a sweet and loving dog who never harmed a soul and loved everyone, same as yours. Later we had an all-black GSD who was equally sweet. Great breed.