Which food has less impact on blood sugar?

POTATOES (POTATOES, SODIUM ACID PYROPHOSPHATE [TO RETAIN COLOR]), WATER, CORN FLAKE CEREAL (MILLED CORN, SUGAR, CONTAINS 2% OR LESS OF: SALT, MALTED BARLEY SYRUP, REDUCED IRON, SODIUM ASCORBATE [VITAMIN C], NIACINAMIDE, PYRIDOXINE HYDROCHLORIDE [VITAMIN B6], RIBOFLAVIN [VITAMIN B2], THIAMIN MONONITRATE [VITAMIN B1], VITAMIN A PALMITATE, FOLIC ACID, VITAMIN D, VITAMIN B12), SOUR CREAM (MILK, CREAM, WHEY, MODIFIED FOOD STARCH, SODIUM PHOSPHATE, GUAR GUM, CARRAGEENAN, CALCIUM SULFATE, LOCUST BEAN GUM, SODIUM CITRATE, CULTURE, NATAMYCIN [PRESERVATIVE]), MILK, MARGARINE (LIQUID AND HYDROGENATED SOYBEAN OIL, WATER, SALT, LESS THAN 2% OF: VEGETABLE MONO-AND DIGLYCERIDES, SOY LECITHIN, SODIUM BENZOATE [PRESERVATIVE], CITRIC ACID, NATURAL AND ARTIFICIAL FLAVOR, CALCIUM DISODIUM EDTA [TO PROTECT FLAVOR], BETA CAROTENE [COLOR], VITAMIN A PALMITATE ADDED), LESS THAN 2% OF: MODIFIED CORN STARCH, CHEESE FLAVOR (WHEY, CHEDDAR CHEESE [MILK, CHEESE CULTURE, SALT, ENZYMES], SUNFLOWER OIL, MALTODEXTRIN, SALT, BLUE CHEESE [MILK, CHEESE CULTURES, SALT, ENZYMES], SODIUM PHOSPHATE, CONTAINS LESS THAN 2% OF: CITRIC ACID, LACTIC ACID), CHICKEN FLAVOR (CHICKEN BROTH, SALT, CHICKEN FAT), ONIONS, ENZYME MODIFIED CHEESE (CHEDDAR AND COLBY CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], WATER, LACTIC ACID, YEAST EXTRACT, SODIUM CITRATE, SODIUM PHOSPHATE, SALT, ENZYMES), SOYBEAN OIL, GARLIC, NONFAT DRY MILK, SODIUM PHOSPHATES, ONION POWDER, GARLIC POWDER, CANOLA OIL, XANTHAN GUM, SPICES, GUAR GUM.