Which food has less impact on blood sugar?

ICEBERG LETTUCE, HOMESTYLE RANCH DRESSING (SOYBEAN AND/OR CANOLA OIL, WATER, DISTILLED VINEGAR, DEHYDRATED BUTTERMILK, CONTAINS LESS THAN 2% OF: SUGAR, SALT, DRIED EGG YOLK, LACTIC ACID, DEHYDRATED GARLIC, DEHYDRATED ONION, CORN STARCH, XANTHAN GUM, DEHYDRATED GREEN ONION, DEHYDRATED CHIVES, NATURAL FLAVORS, BLACK PEPPER), UNCURED HAM CONTAINS UP TO 12% ADDED INGREDIENTS -NO NITRITES OR NITRATES ADDED EXCEPT THOSE NATURALLY OCCURRING IN SEA SALT AND CULTURED CELERY JUICE (PORK, WATER, CONTAINS 2% OR LESS OF: SEA SALT, SUGAR, CULTURED CELERY JUICE, VINEGAR, CHERRY POWDER), CHICKEN BREAST MEAT WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, CONTAINS LESS THAN 2% OF POTATO STARCH, SEA SALT, VINEGAR, YEAST EXTRACT, NATURAL FLAVORS, SPICE), GREEN LEAF LETTUCE, SWISS CHEESE (SWISS CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], POTATO STARCH [TO PREVENT CAKING], POWDERED CELLULOSE [TO PREVENT CAKING], NATAMYCIN [A NATURAL MOLD INHIBITOR]), CARROT, CROUTONS (WHEAT FLOUR, CANOLA OIL AND/OR SUNFLOWER OIL, SUGAR, SALT, YEAST, WHEY, MALTODEXTRIN, GARLIC POWDER, LACTIC ACID POWDER (LACTIC ACID, CALCIUM LACTATE], DEHYDRATED PARSLEY, CORN STARCH).