Which food has less impact on blood sugar?

SUGAR, CHOCOLATE LIQUOR, VEGETABLE FATS (PALM, PALM KERNEL, RAPESEED), COCOA BUTTER, WHOLE MILK POWDER, HAZELNUTS, WHEAT SYRUP, WHEY POWDER, CREAM, WATER, LACTOSE, ALMONDS, CREAM POWDER, BUTTER, CONDENSED MILK, BISCUITS (UNBLEACHED WHEAT FLOUR, CANDY SUGAR, MARGARINE [VEGETABLE FATS {PALM, RAPESEED, COLESEED, COCONUT}, MONO-AND DIGLYCERIDES OF FATTY ACIDS, CITRIC ACID, LACTIC ACID, BETA-CAROTENE, NATURAL BUTTER FLAVOR], CANE SUGAR, SOY FLOUR, INVERT SUGAR, SODIUM BICARBONATE, CINNAMON, NUTMEG), NATURAL RASPBERRY FLAVOR, BUTTER OIL, EMULSIFIER (SOY LECITHIN, MONO-AND DIGLYCERIDES OF FATTY ACIDS, CARRAGEENAN), INVERT SUGAR, COCOA POWDER, ALCOHOL, NATURAL COFFEE FLAVOR, STABILIZER (SORBITOL, SODIUM PYROPHOSPHATE), RASPBERRIES, SKIMMED MILK POWDER, NATURAL VANILLA FLAVOR, SALT, ANTIOXIDANTS (CITRIC ACID, TOCOPHEROL, ALPHA-TOCOPHEROL, ASCORBYL PALMITATE), MALTODEXTRIN, NATURAL CARAMEL FLAVOR, CINNAMON, COLORING (BEET ROOT EXTRACT, PAPRIKA EXTRACT). DARK CHOCOLATE CONTAINS MINIMUM 55% COCOA SOLIDS, MILK CHOCOLATE CONTAINS MINIMUM 31% COCOA SOLIDS AND 18% MILK SOLIDS, WHITE CHOCOLATE MINIMUM 27% COCOA SOLIDS AND 15% MILK SOLIDS.