The Types segmentation distinguishes therapies based on molecular mechanism and formulation, encompassing small‑molecule inhibitors, monoclonal antibodies, and cellular therapies. Small‑molecule inhibitors, such as BRAF and MEK inhibitors, capture the largest share—approximately 45%—owing to their proven efficacy in BRAF‑mutated LCH and related histiocytoses. Monoclonal antibodies, including anti‑CD52 (alemtuzumab) and anti‑IL‑1 agents, account for roughly 30% of the market, reflecting their role in immune modulation and disease control. Cellular therapies, notably CAR‑T and allogeneic stem‑cell transplantation, represent the remaining 25%, driven by their applicability in refractory or high‑risk HLH cases. Each type contributes uniquely to market growth: small molecules fuel rapid adoption due to oral administration, antibodies expand indications through targeted immunotherapy, and cellular approaches push the frontier of curative intent. Precise delineation of these therapy types underpins the overall market valuation and informs strategic R&D prioritization.