Your current stack sounds fine for someone who is cutting down. A lot of supplements are a waste of money, but I do believe in protein powder (Helps hit macros), creatine, and occasionally a pre-workout supp if I feel drained.
Speaking of which, if you're set on looking for supplements to help cut down, I've noticed that White Flood seems to act as a thermogenic, so when training in a fasted state, it seems to burn off a few tenths of an lb. during the course of my workouts.