All types of carbohydrates will raise your blood insulin levels to some degree at least. That is the reason why type 2 diabetes is a form of “carbohydrate intolerance”.
Protein also has a tendency to raise the levels but to a much lesser degree compared to carbohydrate. The only kind of macronutrient which keeps your insulin levels constant and your blood sugar stable is Fat.
Nevertheless, if you are willing to reduce the insulin levels, all you need to reduce is the amount of carbohydrates and replace them instead with healthy, natural fats.