berries like blueberries rasberries and strawberries... and a very smal UNmature pear according to my experience
Some people can eat small green apples or melons. But you have to check your blood sugar levels after eating if this is ok for you.
Yes some Apples are ok. But you need to test before you eat and two hours after with a blood glucose monitor to make sure. You can get all the nutrition you need from above ground vegetables. Fruit is not a necessity. But it is ok as a treat.