Dilgo Khyentse
In the 1970s, Ngakpa Chögyam studied with Chhi'med Rig'dzin Rinpoche, Dudjom Rinpoche, Dilgo Khyentse Rinpoche, Kunzang Dorje Rinpoche, and Khamtrül Yeshé Dorje Rinpoche. He wrote about his experiences in his 2011 book, "Wisdom Eccentrics".