The Types taxonomy classifies postbiotic supplements into four sub‑categories: Live‑cell‑free metabolites, Heat‑inactivated bacterial extracts, Enzyme‑rich fractions, and SCFA‑based formulations. Live‑cell‑free metabolites, derived from cultured strains and purified to isolate bioactive compounds, dominate the premium segment due to their reproducible potency and regulatory clarity. Heat‑inactivated bacterial extracts, which retain structural components such as peptidoglycans after thermal processing, are favored for their stability and ease of incorporation into functional foods. Enzyme‑rich fractions focus on specific catalytic activities (e.g., proteases, lipases) that modulate host metabolic pathways, attracting niche interest from nutraceutical developers targeting metabolic disorders. SCFA‑based formulations, primarily acetate, propionate, and butyrate, are positioned for direct gut‑barrier reinforcement and systemic anti‑inflammatory effects, supporting both clinical and consumer‑grade products. Each type contributes uniquely to the market’s revenue composition, reflecting differing manufacturing complexities, regulatory pathways, and evidence bases within the broader market taxonomy of postbiotic supplements.