In his book Yoga in Modern Hinduism: Hariharānanda Āraṇya and Sāṃkhyayoga (Routledge, 2017), Knut A. Jacobsen examines the Kāpil Maṭh, a Sāṃkhyayoga institution emerging in the late nineteenth century Bengal. This movement (developing contemporaneously with modern yoga) is centered on the cave-dwelling renunciant yogin Hariharānanda Āraṇya. This book offers a rare glimpse into Sāṃkhyayoga as a living tradition in terms of documenting the practices of modern Sāṃkhyayogins. It moreover maps the production of a novel sort of yogin forged by the nineteenth-century transformations of Bengali upper class religious culture.
For information on your host Raj Balkaran’s background, see rajbalkaran.com/scholarship.