Which food has less impact on blood sugar?

TOMATOES (WATER, TOMATO PASTE), ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), LOW MOISTURE PART SKIM MOZZARELLA CHEESE (CULTURED PASTEURIZED PART SKIM MILK, SALT, ENZYMES), COOKED PIZZA TOPPING (SAUSAGE [PORK, MECHANICALLY SEPARATED CHICKEN, SPICES, WATER, SALT, SUGAR, GARLIC POWDER], WATER, TEXTURED VEGETABLE PROTEIN [SOY FLOUR, SALT]), MUSHROOMS, CHEDDAR CHEESE (CULTURED PASTEURIZED MILK, SALT, ENZYMES, ANNATTO [COLOR]), PEPPERONI MADE WITH PORK, CHICKEN AND BEEF (PORK, MECHANICALLY SEPARATED CHICKEN, BEEF, SALT, CONTAINS 2% OR LESS OF: WATER, DEXTROSE, SPICES, SMOKE FLAVORING, LACTIC ACID STARTER CULTURE, SODIUM ASCORBATE, FLAVORING, GARLIC POWDER, SODIUM NITRITE, BHA, BHT, CITRIC ACID, CONTAINS ONE OR MORE OF: PAPRIKA OLEORESIN OF PAPRIKA), BLACK OLIVES, CONTAINS 2% OR LESS OF: WATER, BELL PEPPERS, YEAST, ONION, PALM OIL, VEGETABLE OIL (SOYBEAN AND/OR CANOLA OIL), SUGAR, SALT, MODIFIED FOOD STARCH, SPICE, MALTODEXTRIN, DRIED GARLIC, SEA SALT, HYDROLYZED SOY AND CORN PROTEIN, PAPRIKA, DRIED ONION, WHEAT STARCH, L-CYSTEINE HYDROCHLORIDE, AMMONIUM SULFATE, NATURAL FLAVOR, SOY LECITHIN, ENZYMES (CONTAINS WHEAT), ASCORBIC ACID (DOUGH CONDITIONER)