The Types taxonomy distinguishes five core constructions that together define the market’s product base. Rigid‑frame models, built from solid steel or aluminum, dominate the premium tier due to their structural integrity, yet they occupy a smaller volume because of limited foldability. Folding‑frame wheelchairs—typically hinged steel or aluminum—form the bulk of sales, offering a balance of strength and compactness that aligns with most user requirements. Lightweight aluminum variants, engineered for reduced mass, attract users prioritizing transport ease, especially in outdoor or travel contexts, and command a modest price premium. Steel‑heavy units, while less portable, are favored in institutional settings where durability outweighs weight concerns. Hybrid designs combine aluminum alloys with reinforced steel joints to deliver intermediate weight and robustness. Each type contributes proportionally to market size based on cost, durability, and user preference, forming a comprehensive market taxonomy that guides manufacturers’ product‑development strategies.