Which food has less impact on blood sugar?

LETTUCE BLND ARCADIAN HARVEST (LETTUCE, BUTTERHEAD [INCL BOSTON&BIBB TYPES), RAW), CHICKEN BREAST STRIPS (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, LESS THAN 2% RICE STARCH, LEMON JUICE CONCENTRATE, VINEGAR. SALT, BLACK PEPPER), CAESAR DRESSING (SOYBEAN OIL, WATER, EGG YOLKS, SALT, CONTAINS 2% OR LESS OF DISTILLED VINEGAR, PARMESAN CHEESE (PASTEURIZED MILK. CHEESE CULTURES, SALT, ENZYMES), WORCESTERSHIRE SAUCE CONCENTRATE [DISTILLED VINEGAR, MOLASSES, CORN SYRUP, WATER, SALT, CARAMEL COLOR, GARLIC POWDER, SUGAR, SPICES, CELERY SEED, TAMARIND, NATURAL FLAVORS, SULFITING AGENTS), LEMON JUICE CONCENTRATE, EXTRA VIRGIN OLIVE OIL, MUSTARD FLOUR, GARLIC POWDER, SPICES, ONION POWDER, XANTHAN GUM), GRAPE TOMATO, PARMESAN CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES) AND ANTI-CAKING AGENT (POWDERED CELLULOSE WITH POTASSIUM SORBATE TO PROTECT FLAVOR), SEASONED CROUTONS (ENRICHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN. REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID, CANOLA AND/OR SUNFLOWER OIL [WITH ROSEMARY EXTRACT AND ASCORBIC ACID (TO PRESERVE FRESHNESS)], WHEY, SALT, SUGAR, YEAST, 2% OR LESS OF SPICES, DEHYDRATED PARSLEY, ONION POWDER, PAPRIKA [COLOR], TURMERIC [COLOR EXTRACTIVE OF PAPRIKA [COLOR], SPICE EXTRACTIVE, ENZYMES, ASCORBIC ACID)