Which food has less impact on blood sugar?

CRUST (ENRICHED FLOUR (WHEAT FLOUR, BARLEY MALT, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, SALT, RYE FLOUR, PALM OIL, FUMARIC ACID, CONTAINS LESS THAN 2% OF DEXTROSE, SOY LECITHIN, VEGETABLE OIL (CANOLA AND/OR SOYBEAN OIL), XANTHAN GUM, YEAST, ACETIC ACID), SAUCE (WATER, TOMATO PASTE, SEASONING (SALT, SUGAR, ONION POWDER, SPICES, XANTHAN AND GUAR GUM, GARLIC POWDER, POTASSIUM SORBATE, CITRIC ACID, TRICALCIUM PHOSPHATE, SOYBEAN OIL), MODIFIED FOOD STARCH, PARMESAN CHEESE (PASTEURIZED COW'S MILK, CHEESE CULTURE, SALT AND ENZYMES), LOW MOISTURE PART SKIM MOZZARELLA CHEESE (PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), PEPPERONI (PORK, BEEF, SALT, CONTAINS 2% OR LESS OF FLAVORINGS, DEXTROSE, OLEORESIN OF PAPRIKA, SMOKE FLAVORING, ASCORBIC ACID, LACTIC ACID STARTER CULTURE, SODIUM NITRITE, BHA, BHT, CITRIC ACID), PORK PIZZA TOPPING (PORK, WATER, TEXTURED SOY FLOUR (SOY FLOUR, SALT), CONTAINS 2% OR LESS; SALT, SPICES, HYDROLYZED SOY PROTEIN, MALTODEXTRIN, FLAVORING, PAPRIKA (COLOR), TBHQ, BHT, CITRIC ACID), RED PEPPER, GREEN PEPPER, YELLOW PEPPER, CARAMELIZED ONION (ONION, CONTAINS LESS THAN 2% OF NATURAL ONION FLAVORING (GUM ARABIC, NATURAL FLAVORS, RICE CONCENTRATE, MALTODEXTRIN), FIRE ROASTED PORTABELLA MUSHROOM