Which food has less impact on blood sugar?

PIZZA CRUST (UNBLEACHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID) WATER, PURE SOYBEAN OIL, YEAST, SUGAR, SALT). PIZZA SAUCE (CRUSHED TOMATOES (WATER, CONCENTRATED CRUSHED TOMATOES), SALT, SUGAR, DEHYDRATED ONION, SPICES, CITRIC ACID, GARLIC POWDER.) DOGTOWN PIZZA CHEESE [(PIZZA CHEESE (PASTEURIZED PROCESS CHEDDAR, SWISS AND PROVOLONE CHEESE) (CULTURED PASTEURIZED MILK AND PART SKIM MILK, WATER, MILKFAT, SODIUM PHOSPHATE, SALT, LACTIC ACID, CONTAINS LESS THAN 0.5% OF SORBIC ACID AS A PRESERVATIVE, ENZYMES, SMOKE FLAVOR) MOZZARELLA CHEESE (PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES)]. MUSHROOMS, BELL PEPPER, ONION. PAROMA CHEESE (PARMESAN AND ROMANO CHEESE (COW'S MILK, CHEESE CULTURE, SALT, ENZYMES), MODIFIED FOOD STARCH, WATER, PALM OIL BLEND, CASEIN, DISODIUM PHOSPHATE, SALT, CITRIC ACID, XANTHAN GUM, AND TRISODIUM CITRATE.) GROUND OREGANO.