Which food has less impact on blood sugar?

INGREDIENTS: BREAD: WHITE WHOLE WHEAT FLOUR, WATER, ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, ENZYME, FOLIC ACID), CONTAINS LESS THAN 2 % OF EACH OF THE FOLLOWING: DEXTROSE, INTERESTERIFIED SOYBEAN OIL, SALT, DRIED YEAST, NONFAT MILK, WHEAT FLOUR, MALTED BARLEY FLOUR WITH SULFITES, 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). COATING: INTERESTERIFIED SOYBEAN OIL, CONTAINS LESS THAN 2 % OF EACH OF THE FOLLOWING: WATER, BUTTER (CREAM, SALT), PARMESAN CHEESE (PASTEURIZED MILK, SALT, CHEESE CULTURE, ENZYMES, POWDERED CELLULOSE, SORBIC ACID PRESERVATIVE), PEPPER BLEND (BLACK PEPPER, SALT, BROWN SUGAR, DEHYDRATED ONION, PARSLEY, DEHYDRATED BELL PEPPER, NATURAL FLAVOR, SILICON DIOXIDE), SALT, DEHYDRATED ONION, MONO- AND DIGLYCERIDES, NATURAL FLAVOR, SOYBEAN OIL, CITRIC ACID PRESERVATIVE, ANNATTO EXTRACT COLOR.