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]), 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), PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED PART-SKIM COW'S MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE ADDED TO PREVENT CAKING, NATAMYCIN [A NATURAL MOLD INHIBITOR]).