'Gos Lotsawa Khug pa lhas btsas originated a transmission in Tibet, as did Marpa Lotsawa. The Sakya tradition received both transmissions. Tsongkhapa, founder of the Gelug tradition, considered the Esoteric Community to be the most important of the tantras and used the Ārya tradition as a template for interpreting all the other tantric traditions.
Universal Compassion is based on Je Tsongkhapa's Sunrays of Training the Mind