The types classification divides the HEA market into single‑phase, multiphase, refractory, lightweight and high‑temperature alloys, each with distinct microstructural attributes and end‑use implications. Single‑phase HEAs, characterized by a homogeneous FCC or BCC lattice, dominate the lightweight category, supplying automotive and aerospace manufacturers with a balance of ductility and density reduction. Multiphase HEAs combine ordered and disordered structures, delivering superior hardness and wear resistance, thus finding primary application in industrial tooling. Refractory HEAs, enriched with elements such as Nb, Mo and Ta, retain mechanical integrity above 1000 °C, supporting energy‑generation equipment and high‑temperature aerospace components. Lightweight HEAs, often based on Al‑containing systems, are optimized for mass‑critical aerospace structures, contributing to fuel‑efficiency gains. High‑temperature HEAs, engineered for creep resistance, are integral to turbine and combustion‑chamber parts. Each subtype’s material cost, processing complexity and performance envelope shape its share of the total HEA market, reinforcing the market taxonomy’s relevance for strategic investment.