Which food has less impact on blood sugar?

INGREDIENTS: CRUST: WHITE WHOLE WHEAT FLOUR, WATER, ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), NONFAT MILK, YEAST, VEGETABLE OIL (SOYBEAN AND/OR CANOLA OIL), CONTAINS 2% OR LESS OF: SUGAR, SEA SALT, WHEAT GLUTEN, GUAR GUM, SOY FLOUR, ENZYMES. TOPPINGS: LOW MOISTURE PART SKIM MOZZARELLA AND PARMESAN CHEESES (PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES, MAY CONTAIN NATAMYCIN [A NATURAL MOLD INHIBITOR]), LOW MOISTURE MOZZARELLA, PROVOLONE AND WHITE CHEDDAR CHEESES (MILK, CHEESE CULTURES, SALT, ENZYMES), UNCURED TUKREY & BEEF PEPPERONI NO NITRATES OR NITRITES ADDED EXCEPT FOR THOSE NATURALLY OCCURRING IN CULTURED CELERY POWDER (TURKEY, BEEF, SALT, CONTAINS 2% OR LESS OF: SPICES, DEXTROSE, ROSEMARY EXTRACT, CULTURED CELERY POWDER, CHERRY POWDER, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, SUGAR, CITRIC ACID, NATURAL SMOKE FLAVOR, LIME JUICE CONCENTRATE), SPICE. SAUCE: TOMATOES (WATER, TOMATO PASTE [NOT LESS THAN 28% SOLUBLE SOLIDS]), MODIFIED FOOD STARCH, CONTAINS 2% OR LESS OF: SEA SALT, PARMESAN CHEESE (PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), MALTODEXTRIN, SPICE, PAPRIKA, DRIED GARLIC, CITRIC ACID, DRIED ONION.