Which food has less impact on blood sugar?

BREAD: WHITE WHOLE WHEAT FLOUR, WATER , ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: DEXTROSE, WHEY PROTEIN ISOLATE INTERESTERIFIED SOYBEAN OIL, WHEAT GLUTEN, SALT, DRIED YEAST, WHEAT FLOUR, MALTED BARLEY FLOUR, SOY LECITHIN, ENZYMES, ASCORBIC ACID ADDED AS A DOUGH CONDITIONER, SOYBEAN OIL, SORBITAN MONOSTEARATE. FILLING: LITE MOZZARELLA CHEESE (MOZZARELLA CHEESE [PASTEURIZED SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], NONFAT MILK, FOOD STARCH-MODIFIED*, CORN OIL*, POTASSIUM CHLORIDE*, SODIUM CITRATE*, SODIUM PROPIONATE PRESERVATIVE, VITAMIN A PALMITATE). *INGREDIENTS NOT IN REGULAR MOZZARELLA CHEESE. TOPPING: INTERESTERIFIED SOYBEAN OIL, CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: WATER, PARMESAN CHEESE (PASTEURIZED PART-SKIM MILK, SALT, CHEESE CULTURES, ENZYMES, POWDERED CELLULOSE, SORBIC ACID PRESERVATIVE), PEPPER BLEND (BLACK PEPPER, SALT, BROWN SUGAR, DEHYDRATED ONION, PARSLEY, DEHYDRATED BELL PEPPER, NATURAL FLAVORS, SILICON DIOXIDE), SALT, ONION POWDER, BUTTER (CREAM, SALT), NATURAL FLAVOR, SOYBEAN OIL, ANNATTO EXTRACT COLOR.