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), PIZZA SAUCE (VINE-RIPENED FRESH TOMATOES, BLEND OF EXTRA VIRGIN OLIVE OIL AND SUNFLOWER OIL, SALT, OREGANO, GRANULATED GARLIC, BLACK PEPPER AND NATURALLY DERIVED CITRIC ACID), 4-CHEESE BLEND (LOW MOISTURE PART SKIM MOZZARELLA CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], PROVOLONE CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], ASIAGO MEDIUM CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], IMPORTED ROMANO CHEESE [PASTEURIZED SHEEP'S MILK, CHEESE CULTURES, SALT, ENZYMES], PRODUCT OF FRANCE, RICE FLOUR AND CELLULOSE POWDER ADDED TO PREVENT CAKING, NATAMYCIN [A NATURAL MOLD INHIBITOR]), COOKED ITALIAN SAUSAGE (PORK, WATER, SALT, SPICES, CORN SYRUP SOLIDS, CARAMEL COLOR, SODIUM PHOSPHATES, AUTOLYZED YEAST, FLAVORING, BHA, BHT, CITRIC ACID), GREEN BELL PEPPER, SLICED RIPE OLIVES (RIPE OLIVES, WATER, SALT, FERROUS GLUCONATE [TO STABILIZE COLOR]), RED ONION, PEPPERONI (PORK, BEEF, SALT, CONTAINS 2% OR LESS OF CORN SYRUP, DEXTROSE, FLAVORINGS, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, PAPRIKA, SODIUM ERYTHORBATE, SODIUM NITRITE, SPICES).