Which food has less impact on blood sugar?

MULTIGRAIN FLATBREAD CRUST (WATER, UNBLEACHED ENRICHED WHEAT FLOUR [WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WHOLE WHEAT FLOUR, SPROUTED WHOLE WHEAT FLOUR, WHEAT SOURDOUGH [WATER, FERMENTED WHEAT FLOUR], YEAST, SOYBEAN OIL, SUGAR, CONTAINS 2% OR LESS OF WHEAT GLUTEN, SALT, CULTURED WHEAT STARCH, OAT BRAN, OAT FIBER, WHEAT, RYE, OATS, FLAX SEEDS, FERMENTED RYE, MILLET, TEFF, WHEAT FLOUR, ENZYMES), LOW MOISTURE PART-SKIM MOZZARELLA CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), SAUCE (TOMATO PUREE, SALT, EXTRA VIRGIN OLIVE OIL, DRIED ONION, SPICES, DRIED GARLIC, CITRIC ACID), ALL NATURAL** UNCURED PEPPERONI, NO NITRATE OR NITRITE ADDED EXCEPT THAT NATURALLY OCCURRING IN SEA SALT AND CELERY POWDER (PORK, BEEF, WATER, SEA SALT, GROUND MUSTARD, SPICES, EVAPORATED CANE SYRUP, PAPRIKA, CULTURED CELERY POWDER, GRANULATED GARLIC, LACTIC ACID STARTER CULTURE), COOKED ALL NATURAL** ITALIAN SAUSAGE (PORK, WATER, SEA SALT, SUGAR, SPICES, FLAVORING), UNSMOKED PROVOLONE CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES), PARMESAN CHEESE ([PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE [ANTI-CAKING AGENT]).