Tsongkhapa (1357-1419) wears the yellow hat of the Gelugpa order, which he founded and now has the Dalai Lama at its head. He is supposedly a manifestation of Manjushri, the Bodhisattva of wisdom. Although there’s no photography allowed, here’s a photo from my 1993 trip. Note the photo of the current Dalai Lama, allowed in 1993 in a period of religious tolerance