Map the Major Meditation Traditions and Their Core Differences

Vipassana, vajrayana, Zen, non-dual inquiry, MBSR, somatic work: all called meditation, all doing something different under the bonnet. This lays them out side by side, the theory of mind behind each and what it asks you to attend to. For when you want to understand the field rather than be sold one school as the answer.

I want a structured comparison of the major meditation traditions to understand how they differ in theory and method. Cover: Theravada vipassana, Tibetan vajrayana (specifically {tibetan_practice}), Zen shikantaza, non-dual inquiry (Advaita / Dzogchen), secular mindfulness-based stress reduction (MBSR), and somatic or body-based approaches. For each, explain: the underlying theory of mind, the primary object of meditation, the role of the teacher, the expected arc of progress, and the type of practitioner it suits. I am an {experience_level} practitioner with a background in {background_tradition}. Highlight where my tradition overlaps with and diverges from the others.