In a small bowl, mix together the sour cream and 2 Tbsp. of the green onion. Refrigerate until serving.
In a large bowl, mix the potatoes, cornmeal, garlic salt and smoked paprika. Add the corn, cheese and remaining green onions. If mixture is too dry, add a little milk until the consistency is right. Mix until blended.
Using 1/2 cupfuls, shape mixture into twelve 3-1/2-in. patties.
In a large nonstick skillet coated with cooking spray over medium heat, cook patties in batches for 2 or 3 minutes on each side, until golden brown.