Which food has less impact on blood sugar?

VEGETABLES: ROMAINE LETTUCE. DRESSING: SOYBEAN OIL, WATER, PARMESAN CHEESE (PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), CORN VINEGAR, SALT, DISTILLED VINEGAR, SUGAR, CONTAINS LESS THAN 2% OF EGG YOLKS, ANCHOVY, CITRIC ACID, SPICES, XANTHAN GUM, DEHYDRATED GARLIC, LEMON JUICE CONCENTRATE, NATURAL FLAVORS (MILK), DEHYDRATED ONION. CROUTONS: ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), CANOLA OIL, SUGAR, SALT, CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: WHEY, YEAST, GARLIC POWDER, ROMANO CHEESE MADE FROM COW'S MILK (PART SKIM MILK, CULTURE, SALT, ENZYMES). DRIED TOMATO, DRIED PARSLEY, YEAST EXTRACT, SPICES, WHITE VINEGAR, NATURAL FLAVOR, BUTTERMILK, ROSEMARY EXTRACTIVES, ASCORBIC ACID (TO MAINTAIN FRESHNESS). CHEESE: PARMESAN CHEESE (MILK, SALT, CHEESE CULTURES, ENZYMES) ROMANO CHEESE (PASTEURIZED COW'S MILK, SALT, CHEESE CULTURES, ENZYMES), POWDERED CELLULOSE, NATAMYCIN (A MOLD INHIBITOR). SEASONING: SPICES, SALT, DEHYDRATED GARLIC, DEHYDRATED ONION, DEHYDRATED RED BELL PEPPER, YEAST EXTRACT, SPICE EXTRACTIVE, OIL OF GARLIC.