Swami Vivekananda, born Narendra Nath Datta (1863–1902), was a towering figure in the spiritual and philosophical landscape of India and the world. He emerged as one of the most influential spiritual leaders of modern India, leaving an indelible mark on the global stage with his teachings on Vedanta and Yoga. Vivekananda played a pivotal role in the revival of Hinduism and the spread of Indian spiritual heritage to the West. His famous speech at the Parliament of the World's Religions in Chicago in 1893 introduced the world to the richness and depth of Hindu philosophy, earning him widespread acclaim and recognition. Vivekananda's profound insights into the unity of religions, emphasis on self-realization, and commitment to social service continue to inspire millions around the globe.

Sri Aurobindo (born Aurobindo Ghose; 15 August 1872 – 5 December 1950) was an Indian philosopher, yogi, maharishi, poet, and Indian nationalist. He was also a journalist, editing newspapers such as Bande Mataram. He joined the Indian movement for independence from British colonial rule, until 1910 was one of its influential leaders, and then became a spiritual reformer, introducing his visions on human progress and spiritual evolution.

Paramahansa Yogananda (born Mukunda Lal Ghosh; January 5, 1893 - March 7, 1952) was an Indian-American Hindu monk, yogi and guru who introduced millions to meditation and Kriya Yoga through his organization, Self-Realization Fellowship (SRF) / Yogoda Satsanga Society (YSS) of India - the only one he created to disseminate his teachings. A chief disciple of the yoga guru Swami Sri Yukteswar Giri, he was sent by his lineage to spread the teachings of yoga to the West. He immigrated to the US at the age of 27 to prove the unity between Eastern and Western religions and to preach a balance between Western material growth and Indian spirituality. His long-standing influence in the American yoga movement, and especially the yoga culture of Los Angeles, led him to be considered by yoga experts as the "Father of Yoga in the West". He lived his last 32 years in the US.