Which food has less impact on blood sugar?

SWEET CREAM BUTTERMILK, CREAM, SUGAR, GRAHAM CRACKER SWIRL (GRAHAM CRACKER [WHEAT FLOUR, GRAHAM FLOUR, SUGAR, PALM OIL, MOLASSES, HONEY, SALT, BAKING SODA], SOYBEAN OIL, POWDERED SUGAR [SUGAR, CORNSTARCH], COCNUT OIL, MONO & DIGLYCERIDES, SOY LECTHIN, SALT), LEMON BAR PIECES (WHEAT FLOUR, SUGAR, MARGARINE [PALM OIL, WATER, SOYNEAN OIL, CONTAINS LESS THAN 2% OF SALT, NATURAL FLAVOR, SOY LECTHIN], BROWN SUGAR, PASTEURIZED EGGS, WATER, FRUCTOSE, BAKING POWDER [SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORNSTARCH, MONOCALCIUM PHOSPHATE], TURMERIC EXTRACT [COLOR], LEMON OIL, SALT, NATURAL FLAVOR, CORNSTARCH), LEMON FLAVOR BASE (CORN SYRUP, LEMON JUICE CONCENTRATE, NATURAL FLAVOR, ANNATTO AND TURMERIC EXTRACT [COLORS], XANTHAN GUM), GRAHAM CRUNCH (GRAHAM CRUNCH [ENRICHED BLEACHED WHEAT FLOUR {BLEACHED WHEAT FLOUR, WHEAT STARCH, NIACIN, REDUCED IRON, THIAMINE, SALT, SODIUM RIBOFLAVIN, FOLIC ACID}, SUGAR, WHOLE WHEAT FLOUR, PALM OIL, MOLASSES, SALT, SODIUM BICARBONATE, CARAMEL COLOR], COCONUT OIL, SUGAR, NATURAL FLAVOR, SALT, SORBIC ACID), WHEY, CONTAINS LESS THAN 2% OF CITRIC ACID, CAROB BEAN GUM, GUAR GUM.