- Glucomannan: A soluble fiber found in konjac root (shirataki) - Agar agar: A gelling agent extracted from seaweed - Inulin: A soluble fiber found in chicory root - Oat bran: The outer layer of oats, rich in soluble fiber - Psyllium husk: The fibrous outer layer of psyllium seeds - Methylcellulose: A plant-derived fiber often used in processed foods