Which food has less impact on blood sugar?

ROMAINE LETTUCE, CAESAR DRESSING (SOYBEAN OIL, WATER, DISTILLED VINEGAR, ROMANO CHEESE [PASTEURIZED CULTURED MILK, SALT, ENZYMES], EGG YOLKS, SALT, OLIVE OIL, CONTAINS LESS THAN 2% OF PARMESAN CHEESE [PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], DRIED GARLIC, MUSTARD SEEDS, SPICE, ANCHOVY EXTRACT [FISH], XANTHAN GUM), CHICKEN BREAST MEAT WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, CULTURED SUGAR AND VINEGAR, POTATO STARCH, SEA SALT, NATURAL FLAVORINGS), CROUTONS (ENRICHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], CANOLA AND/OR SUNFLOWER OIL [WITH ROSEMARY EXTRACT AND ASCORBIC ACID {TO PRESERVE FRESHNESS}], 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), PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING]).