Which food has less impact on blood sugar?

ICEBERG LETTUCE, SALSA RANCH DRESSING (WATER, CULTURED LOWFAT BUTTERMILK, SOYBEAN OIL CIDER VINEGAR, TOMATO PASTE, DISTILLED VINEGAR, SUGAR, CONTAINS LESS THAN 2% OF SALT, EGG YOLKS, CORN STARCH, DEHYDRATED ONION, XANTHAN GUM, DEHYDRATED GARLIC, SPICES [INCLUDES MUSTARD], DEHYDRATED RED BELL PEPPER, DEHYDRATED GREEN JALAPENO PEPPER, GUM ACACIA, DEHYDRATED GREEN ONION, OLEORESIN PAPRIKA [COLOR]), GRILLED CHILI LIME SEASONED CHICKEN BREAST MEAT WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, LESS THAN 2% BROWN SUGAR, SALT, RICE STARCH, SPICES [INCLUDING PAPRIKA], VINEGAR*, CHILI PEPPER, NATURAL FLAVOR, LIME OIL), GREEN LEAF LETTUCE, FOUR CHEESE BLEND (MONTEREY JACK AND QUESO QUESADILLA CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], ASADERO AND CHEDDAR CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO {VEGETABLE COLOR}], POTATO STARCH AND POWDERED CELLULOSE [TO PREVENT CAKING], NATAMYCIN* [A NATURAL MOLD INHIBITOR]), ROASTED CORN, TORTILLA STRIPS (WHOLE GRAIN CORN MASA FLOUR, SUNFLOWER AND/OR SAFFLOWER OIL, SEA SALT, COLOR ADDED [BEET JUICE, BLACK CARROT JUICE, ANNATTO EXTRACT]).