Types segmentation classifies the Anti‑COVID‑19 Compound Library market by molecular format, a fundamental dimension of market taxonomy that influences synthesis pathways, assay compatibility, and intellectual‑property strategies. Small‑molecule libraries dominate with approximately 55 % of market spend, owing to their synthetic tractability, oral‑bioavailability potential, and extensive precedent in antiviral pipelines. Biologics libraries, encompassing monoclonal antibodies, nanobodies, and recombinant proteins, capture roughly 20 % of revenue; their high specificity and emergent role in neutralizing spike‑protein conformations justify premium pricing despite higher production costs. Peptide libraries represent about 15 % of the market, offering rapid‑design cycles and the ability to target protein‑protein interfaces that are less accessible to small molecules. Finally, Natural‑product libraries account for the remaining 10 %, leveraging diverse scaffolds derived from marine, plant, and microbial sources that often exhibit unique mechanisms of action. The relative weighting of these types reflects current R&D risk‑return calculations, regulatory pathways, and the strategic emphasis on combinatorial chemistry versus biologic engineering within the broader Anti‑COVID‑19 Compound Library segmentation.