Which food has less impact on blood sugar?

ICEBERG LETTUCE, DILL PICKLE RANCH DRESSING (SOYBEAN OIL, CULTURED LOWFAT BUTTERMILK, WATER, DISTILLED VINEGAR, ONION, PICKLES, NONFAT DRY MILK, SUGAR, CUCUMBER JUICE, EGG YOLKS, CONTAINS LESS THAN 2% OF SALT, DEHYDRATED GARLIC, DEHYDRATED ONION, SPICES, XANTHAN GUM, NATURAL FLAVORS, CELERY SEED, MUSTARD SEED, RED BELL PEPPER), ROASTED SEASONED CHICKEN BREAST MEAT WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, LESS THAN 2% RICE STARCH, VINEGAR, LEMON JUICE CONCENTRATE, SALT, SUGAR, NATURAL FLAVORS, SPICE), UNCURED BACON-NO NITRITES OR NITRATES ADDED EXCEPT THOSE NATURALLY FOUND IN SEA SALT AND CULTURED CELERY JUICE (PORK, WATER, SEA SALT, SUGAR, NATURAL SMOKE FLAVOR, CULTURED CELERY JUICE), SWISS CHEESE (SWISS CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING]), GREEN LEAF LETTUCE, DILL PICKLE BRIOCHE CROUTON-CRUMBLE (WHEAT FLOUR, SUNFLOWER OIL, SPICE BLEND [SALT, VINEGAR POWDER {MALTODEXTRIN, WHITE DISTILLED VINEGAR}, MALTODEXTRIN, GARLIC POWDER, MALIC ACID, ONION POWDER, SPICE, DILLWEED OIL, LESS THAN 2% RICE HULLS ADDED TO PREVENT CAKING], PALM FRUIT OIL, SUGAR, SALT, YEAST, ROSEMARY EXTRACT).