Which food has less impact on blood sugar?

ROMAINE LETTUCE, CHICKEN BREAST (BONELESS SKINLESS CHICKEN BREAST, WATER, ISOLATED SOY PROTEIN, SALT, SODIUM PHOSPHATE BLACK PEPPER), DRESSING (SOYBEAN OIL, WATER, ROMANO CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), PARMESAN CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), EGG YOLK, LEMON JUICE CONCENTRATE, <2% OF SALT, ANCHOVIES, NATURAL FLAVOR, GARLIC, XANTHAN GUM, SPICE, DISTILLED VINEGAR, DRIED GARLIC, DRIED ONION, LACTIC ACID, MOLASSES, MUSTARD SEED)), PARMESAN CHEESE (PASTEURIZED PART SKIM MILK, CHEESE CULTURE, SALT, ENZYME, POWDERED CELLULOSE (ANTI-CAKING), NATAMYCIN (PRESERVATIVE), 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 (PRESERVATIVES)), WHEY, SALT, YEAST, SUGAR, 2% OR LESS OF DEHYDRATED PARSLEY, GARLIC POWDER, 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)).