Which food has less impact on blood sugar?

CRUST (ENRICHED WHEAT FLOUR [WHEAT FLOUR, FERROUS SULFATE, NIACIN, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYME], WATER, SOYBEAN OIL, CONTAINS 2% OR LESS OF: YEAST, SUGAR, CULTURED WHEY, WHEY, VINEGAR, SALT, DOUGH CONDITIONER [WHEAT FLOUR, ASCORBIC ACID, ENZYMES]), SAUCE (WATER, TOMATOES, SEASONING [SUGAR, SALT, MODIFIED FOOD STARCH, SPICES, DEHYDRATED GARLIC, CITRIC ACID], SUGAR), MOZZARELLA CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES), COOKED SEASONED PIZZA TOPPING (SAUSAGE [PORK, MECHANICALLY SEPARATED CHICKEN, WATER, SPICES, SALT, SODIUM PHOSPHATE, PAPRIKA {COLOR}, MODIFIED FOOD STARCH, NATURAL FLAVOR, AUTOLYZED YEAST EXTRACT, BHA, BHT, CITRIC ACID, YEAST EXTRACT, DISODIUM INOSINATE, SOY LECITHIN], WATER, TEXTURED SOY PROTEIN CONCENTRATE, SOY PROTEIN CONCENTRATE), PEPPERONI MADE WITH PORK, CHICKEN AND BEEF (PORK, MECHANICALLY SEPARATED CHICKEN, BEEF, SALT, SPICES, DEXTROSE, LACTIC ACID STARTER CULTURE, PAPRIKA OLEORESIN, SODIUM ASCORBATE, FLAVORING, SODIUM NITRITE, BHA, BHT, CITRIC ACID), RED BELL PEPPERS, GREEN BELL PEPPERS, BLACK OLIVES (OLIVES, SALT, FERROUS GLUCONATE), ONION.