There are no specific food items that can reverse diabetes. However, certain food groups should be consumed by diabetic patients to maintain blood sugar to an acceptable range. Healthy carbohydrates such as whole grains, fiber-rich food such as vegetables, fish containing omega-3 fatty acids such as salmon, and good fat such as avocado, should comprise a diabetic meal. It is crucial to avoid food containing saturated fat, trans fat, cholesterol, added sugar, and salt.
Reference:
CDC: https://www.cdc.gov/diabetes/managing/eat-well/diabetes-and-carbohydrates.html
Mayo Clinic: https://www.mayoclinic.org/diseases-conditions/diabetes/in-depth/diabetes-diet/art-20044295
CDC: https://www.cdc.gov/diabetes/managing/eat-well/meal-plan-method.html