Which food has less impact on blood sugar?

ICEBERG LETTUCE, CHICKEN BREAST WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, SODIUM LACTATE, SEASONING [SALT, SUGAR, ARTIFICIAL CHICKEN FLAVOR {HYDROLYZED CORN PROTEIN, AUTOLYZED YEAST EXTRACT, THIAMINE HYDROCHLORIDE, DISODIUM INOSINATE, DISODIUM GUANYLATE}, DEXTROSE, NATURAL FLAVORING], MODIFIED POTATO STARCH, DEXTROSE, POTASSIUM LACTATE, SODIUM PHOSPHATES, SODIUM DIACETATE), CAESAR DRESSING (WATER, SOYBEAN OIL, PARMESAN CHEESE [PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], DISTILLED VINEGAR, ROMANO CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], EGG YOLKS, SALT, CORN SYRUP, CONTAINS LESS THAN 2% OF LEMON JUICE CONCENTRATE, GRANULAR CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], SUGAR, DEHYDRATED GARLIC, SPICES [INCLUDES MUSTARD], POLYSORBATE 60, DEHYDRATED ONION, SODIUM BENZOATE AND POTASSIUM SORBATE [AS PRESERVATIVES], ENZYME MODIFIED CHEESE [CULTURED MILK, WATER, SALT, ENZYMES], MOLASSES, ANCHOVY, LACTIC ACID, NATURAL FLAVORS, DEFATTED SOY FLOUR, ENZYMES, CARAMEL COLOR, CALCIUM DISODIUM EDTA [TO PROTECT FLAVOR], TAMARIND, CELERY SEED), GREEN LEAF LETTUCE, PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING])