Types segmentation classifies MRg LITT technologies according to delivery mechanisms and anatomical targets. The primary Ablative LITT type utilizes continuous‑wave fiber lasers to generate coagulative necrosis, predominately employed in solid tumor ablation and deep‑seated lesion treatment. A secondary Thermo‑feedback LITT type integrates real‑time MR thermometry, enabling dynamic power modulation and protecting adjacent critical structures; this subtype is essential for eloquent‑brain procedures. Within these, sub‑categories emerge: Cerebral Tumor LITT (gliomas, metastases), Spinal Tumor LITT (intramedullary and extramedullary lesions), Skull‑Base LITT (pituitary adenomas, chordomas), and Functional Lesion LITT (cortical dysplasia, seizure foci). Each subtype contributes uniquely to market size by dictating device specifications, consumable fiber costs, and training requirements. The diversification of types expands the addressable patient pool, prompting vendors to broaden product portfolios and support services, thereby reinforcing the overall market taxonomy of MR‑Guided Laser Interstitial Thermal Therapy (MRg LITT).