Which food has less impact on blood sugar?

INGREDIENTS: CRUST: WHOLE GRAIN BLEND (WHITE WHOLE WHEAT FLOUR, WHOLE GRAIN YELLOW CORN FLOUR, BROWN RICE FLOUR, WHOLE GRAIN OAT FLOUR), NONFAT MILK, ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, YEAST, VEGETABLE OIL (SOYBEAN AND/OR CANOLA OIL), DOUGH CONDITIONER (ENZYMES, CONTAINS ONE OR MORE OF THE FOLLOWING: DATEM, CALCIUM CARBONATE, WHEAT GLUTEN, GUAR GUM, ASCORBIC ACID, CHERRY POWDER), SUGAR, CONTAINS 2% OR LESS OF: HYDROGENATED SOYBEAN OIL, PARMESAN CHEESE (PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), SEA SALT, DEXTROSE, SPICE, SALT, SOY LECITHIN, NATURAL FLAVOR, WHEAT STARCH. TOPPINGS: LOW MOISTURE PART SKIM MOZZARELLA AND PARMESAN CHEESES (PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES, NATAMYCIN [A NATURAL MOLD INHIBITOR]), LITE MOZZARELLA CHEESE (SKIM MILK, CHEESE CULTURES, SALT, MODIFIED FOOD STARCH*, ENZYMES, VITAMIN A PALMITATE) *INGREDIENTS NOT IN REGULAR MOZZARELLA CHEESE, PROVOLONE AND WHITE CHEDDAR CHEESES (MILK, CHEESE CULTURES, SALT, ENZYMES), SPICE. SAUCE: TOMATOES (WATER, TOMATO PASTE [NOT LESS THAN 28% SOLUBLE SOLIDS]), CONTAINS 2% OR LESS OF: MODIFIED FOOD STARCH, PARMESAN CHEESE (PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), SUGAR, DEXTROSE, SALT, DRIED GARLIC, SPICE, DRIED ONION, DEHYDRATED ROMANO CHEESE (SHEEP'S AND COW'S MILK, CHEESE CULTURES, SALT, ENZYMES), PAPRIKA, CITRIC ACID.