Gautama, also known as Akshapada Gautama, is credited with founding the Nyaya school of philosophy, which emphasizes the importance of logic and reasoning in understanding the nature of reality.

Vyasa, also known as Veda Vyasa, is traditionally considered to be the author of the Bhagavad Gita, a sacred text of Hinduism that is part of the epic Mahabharata.

Kapila is credited with founding the Samkhya school of philosophy, which proposes that reality consists of two fundamental principles: Purusha (consciousness) and Prakriti (matter).

Charaka is considered one of the most important contributors to Ayurveda, an ancient Indian system of medicine. His work, the Charaka Samhita, is a foundational text in Ayurvedic medicine.

Kanada is credited with founding the Vaisheshika school of philosophy, which emphasizes the importance of atomism and the study of physical phenomena.

Patanjali is considered to be the founder of classical Yoga philosophy. His work, the Yoga Sutras, is a foundational text in the study of Yoga.

Jaimini is credited with founding the Mimamsa school of philosophy, which focuses on the interpretation of the Vedas, the sacred texts of Hinduism.

Adi Shankara is considered to be one of the most important figures in the history of Vedanta philosophy. His work, the Advaita Vedanta, emphasizes the non-dual nature of reality.

Jaimini is credited with founding the Purva Mimamsa school of philosophy, which focuses on the interpretation of the Vedas, particularly the ritualistic aspects.

Abhinavagupta is considered to be one of the most important figures in the history of Tantra. His work, the Tantraloka, is a foundational text in the study of Tantra.

Adi Shankara is credited with founding the Advaita Vedanta school of philosophy, which emphasizes the non-dual nature of reality and the identity of the individual soul with the universal soul.

Chaitanya Mahaprabhu is considered to be one of the most important figures in the history of Bhakti Yoga. His work, the Chaitanya Charitamrita, is a foundational text in the study of Bhakti Yoga.

Ramanuja is credited with founding the Vishishtadvaita Vedanta school of philosophy, which emphasizes the qualified non-dual nature of reality and the distinction between the individual soul and the universal soul.

Adi Shankara is considered to be one of the most important figures in the history of Jnana Yoga. His work, the Vivekachudamani, is a foundational text in the study of Jnana Yoga.

Madhvacharya is credited with founding the Dvaita Vedanta school of philosophy, which emphasizes the dual nature of reality and the distinction between the individual soul and the universal soul.