Are you specifically looking for foods that have similar nutrients or are you looking to get a thicker consistency or taste?
Potassium - coconut water, Swiss chard, spinach, papaya, beans
B6 - sunflower seeds, spinach, avocado, cauliflower, kale, Swiss chard, broccoli
Vitamin C - broccoli, citrus, strawberries, blueberries, papaya, pineapple, kiwi, kale
avocado, nuts, chia seeds, flax seeds, almond milk
Nothing really tastes like banana, but to sweeten up your Blast naturally try figs, pitted dates, cinnamon, liquid vanilla stevia, a touch of raw honey, or any other sweeter fruit!