Which food has less impact on blood sugar?

ROMAINE LETTUCE, AVOCADO RANCH DRESSING (BUTTER MILK [CULTURED PASTEURIZED SKIM MILK AND MILK, SODIUM CITRATE AND SALT], SOYBEAN OIL, WATER, AVOCADO PULP [AVOCADO, ASCORBIC ACID, XANTHAN GUM, CITRIC ACID], TOMATO, SOUR CREAM [PASTEURIZED CULTURED MILK, CREAM, NONFAT MILK POWDER, GELATIN], DISTILLED VINEGAR, CONTAINS LESS THAN 2% OF EGG YOLKS, SALT, SUGAR, DEHYDRATED ONION, XANTHAN GUM, SODIUM BENZOATE AND POTASSIUM SORBATE [AS PRESERVATIVES], LACTIC ACID, CILANTRO, DEHYDRATED GARLIC, SPICES, PHOSPHORIC ACID, AUTOLYZED YEAST EXTRACT, DEHYDRATED GREEN ONION, CALCIUM DISODIUM EDTA ADDED TO PROTECT FLAVOR, YELLOW 5, YELLOW 6, BLUE 1, RED 40), CHICKEN BREAST MEAT (CHICKEN BREAST WITH RIB MEAT, WATER, CULTURED SUGAR AND VINEGAR, POTATO STARCH, SEA SALT, NATURAL FLAVORINGS), GRAPE TOMATO, CARROT, RED CABBAGE, BACON (CURED WITH: WATER, SALT, SUGAR, SODIUM PHOSPHATE, SODIUM ERYTHORBATE, SODIUM NITRITE, MAY CONTAIN SMOKE FLAVORING), FANCY SHRED MILD CHEDDAR & MONTEREY JACK CHEESE (CHEDDAR CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO (VEGETABLE COLOR)], MONTEREY JACK CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], POTATO STARCH AND POWDERED CELLULOSE [TO PREVENT CAKING], NATAMYCIN [MOLD INHIBITOR]).