Types segmentation classifies the EGFR‑TKI for Advanced NSCLC market by molecular generation. First‑generation agents (e.g., gefitinib, erlotinib) represent the legacy cohort, primarily used where cost sensitivity prevails, yet they hold a diminishing share as resistance mechanisms evolve. Second‑generation inhibitors (afatinib, dacomitinib) offer broader irreversible binding, capturing patients seeking more potent blockade, but their adoption is moderated by safety profiles. Third‑generation TKIs (osimertinib) dominate current growth, delivering activity against T790M resistance and central nervous system penetration, thus commanding premium pricing and expanding both first‑line and second‑line indications. Each type contributes distinct revenue streams: first‑generation ~20%, second‑generation ~25%, and third‑generation ~55% of the total market. Understanding these type‑based dynamics is essential for forecasting pipeline impact and competitive positioning within the broader EGFR‑TKI for Advanced NSCLC market taxonomy.