Indian Philosopy

Indian philosophy comprises:

three unorthodox systems;
three pairs of orthodox systems;
three main interpretations of the main orthodox system.

Orthodoxy is acceptance of the Vedas.
The Upanishads are the end of the Vedas, "Vedanta."

There are two orthodox and two unorthodox formulations of the ancient tradition of meditative practice.

Yoga formulates meditation and accepts the Vedas. Vedanta synthesizes meditation with the Upanishads.

Jainism and Yoga are soul pluralist.
Buddhism is no-soulist.
Advaita Vedanta is monist.

The three interpretations of Vedanta are Dualism, Non-Dualism and Qualified Non-Dualism, i.e., theism, monism and monistic theism.