Which food has less impact on blood sugar?

FLATBREAD (ENRICHED WHEAT FLOUR [WHEAT FLOUR, ASCORBIC ACID, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYME], WATER, SOYBEAN OIL, CULTURED WHEAT FLOUR, SALT, SUGAR, DRIED SOURDOUGH [WHEAT FLOUR, RYE FLOUR, YEAST, BACTERIAL CULTURE], YEAST, INACTIVE YEAST, EXTRA VIRGIN OLIVE OIL, VEGETABLE MONO- AND DIGLYCERIDES, DURUM WHEAT SEMOLINA), PIZZAIOLO SAUCE (TOMATOES, EXTRA VIRGIN OLIVE OIL AND SUNFLOWER OIL, SALT, OREGANO, BLACK PEPPER, GRANULATED GARLIC, CITRIC ACID), FOUR CHEESE BLEND (PART SKIM MOZZARELLA CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], PROVOLONE CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], ASIAGO CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], ROMANO CHEESE [PASTEURIZED SHEEP'S MILK, CHEESE CULTURES, SALT, ENZYMES], POTATO STARCH, CANOLA OIL AND CELLULOSE POWDER TO PREVENT CAKING, NATAMYCIN [NATURAL MOLD INHIBITOR]), ITALIAN SAUSAGE (PORK, WATER, SALT, SPICES, CORN SYRUP SOLIDS, CARAMEL COLOR, SODIUM PHOSPHATES, AUTOLYZED YEAST, FLAVORING, BHA, BHT, CITRIC ACID), PEPPERONI (PORK, SALT, CONTAINS 2% OR LESS OF: BEEF, DEXTROSE, FLAVORINGS, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, SODIUM NITRITE, SPICES, VITAMIN C [SODIUM ASCORBATE], BHA, BHT, CITRIC ACID), BACON (CURED WITH WATER, SALT, SMOKE FLAVORING, SODIUM PHOSPHATE, SODIUM ERYTHORBATE, SODIUM NITRITE, MAY CONTAIN SUGAR, BROWN SUGAR), PARMESAN CHEESE (PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES).