Which food has less impact on blood sugar?

CHICKEN SALAD (CHICKEN BREAST [CHICKEN BREAST WITH RIB MEAT, WATER, LESS THAN 2% POTATO STARCH, SALT, SUGAR, GRANULATED GARLIC, BLACK PEPPER], MAYONNAISE [SOYBEAN OIL, WHOLE EGG, WATER, DISTILLED VINEGAR, EGG YOLKS, CONTAINS LESS THAN 2% OF CORN SYRUP, SALT, SUGAR, LEMON JUICE CONCENTRATE, NATURAL FLAVOR, CALCIUM DISODIUM EDTA ADDED TO PROTECT FLAVOR], CELERY, ONIONS, WHITE PEPPER, LEMON JUICE, SALT), BREAD (WHOLE GRAIN GRANOLA AND FLOUR MIX [WHOLE WHEAT FLOUR, STEEL CUT WHEAT, STEEL CUT OATS, OAT FLAKES, BARLEY FLAKES, TRITICALE FLAKES, SOFT WHITE WHEAT FLAKES, RYE FLAKES, AMARANTH, FLAX SEEDS, WHEAT GERM, WHOLE GRAIN CORNMEAL], ENRICHED UNBLEACHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN AND FOLIC ACID], WATER, YEAST, VITAL WHEAT GLUTEN, BROWN SUGAR, SUGAR, CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: SUNFLOWER SEEDS, GOLDEN FLAX, VEGETABLE OIL [CANOLA AND/OR SOY], SALT, DISTILLED VINEGAR, CULTURED WHEAT FLOUR, CARAMEL COLOR, XANTHAN GUM, DOUGH CONDITIONER [ASCORBIC ACID], CALCIUM SULFATE, ENZYMES, NONFAT DRY MILK, SOY FLOUR), LETTUCE.