Which food has less impact on blood sugar?

ROMAINE LETTUCE, CHICKEN BREAST (CHICKEN BREAST, WATER, SEA SALT, STABILIZER [RICE STARCH], DISTILLED VINEGAR [WHITE DISTILLED VINEGAR {DILUTED WITH WATER TO 4% ACIDITY}], SODIUM TRIPOLYPHOSPHATE), CAESAR DRESSING (SOYBEAN OIL, WATER, HIGH FRUCTOSE CORN SYRUP, PARMESAN AND ROMANO CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], DISTILLED VINEGAR, EGG YOLKS, SALT, CONTAINS LESS THAN 2% OF SPICES, ANCHOVY PASTE [ANCHOVIES, SALT, DEFATTED SOY FLOUR, WATER], DEHYDRATED GARLIC, CITRIC ACID, XANTHAN GUM, SODIUM BENZOATE AND POTASSIUM SORBATE [AS PRESERVATIVES], DEHYDRATED ONION, CARAMEL COLOR, LEMON JUICE CONCENTRATE, DISODIUM INOSINATE & DISODIUM GUANYLATE, ARTIFICIAL FLAVOR, EXTRACTIVE OF TURMERIC, CALCIUM DISODIUM EDTA ADDED TO PROTECT FLAVOR), PARMESAN CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES AND CELLULOSE [TO PREVENT CAKING]), CROUTONS (ENRICHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], CANOLA AND/OR SUNFLOWER OIL, WHEY, SALT, YEAST, 2% OR LESS OF HIGH FRUCTOSE CORN SYRUP, DEHYDRATED PARSLEY, GARLIC POWDER, CALCIUM PROPIONATE [PRESERVATIVE], NATURAL AND ARTIFICIAL FLAVOR, PARMESAN CHEESE AND ENZYME MODIFIED CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], CULTURED NONFAT MILK, ANNATTO [COLOR], EXTRACTIVES OF TURMERIC AND PAPRIKA [COLOR], ENZYMES, ASCORBIC ACID, TBHQ [TO PRESERVE FRESHNESS]).