The Types segment classifies polyester corner sofas into L‑shaped, U‑shaped, modular, and fixed‑frame configurations, each with distinct sub‑variations. L‑shaped units, the most common, are further split into standard, recliner‑integrated, and chaise‑enhanced models, catering to compact living rooms and flexible seating layouts. U‑shaped sofas, comprising a central backrest with two extending arms, are favored in larger spaces and often feature interchangeable cushions for modular re‑arrangement. Modular systems consist of discrete sections—seat, back, and corner units—that can be assembled in multiple orientations, supporting evolving interior designs and scalability. Fixed‑frame designs, typically built with a single continuous frame, prioritize structural rigidity and are prevalent in high‑traffic public areas. The relative market share of each type is determined by spatial constraints, consumer lifestyle trends, and price positioning, collectively defining the overall market taxonomy for polyester corner sofas.