The three esoteric traditions on which I am focussed my original study were: Madame Blavatsky's Theosophy, MacGregor Mather's The Hermetic Order of the Golden Dawn, and G.I. Gurdjieff's Fourth Way. Click on the photos below for a brief summary of these traditions and the people that began them.
References 1. Faivre, Antoine. Introduction to Modern Esoteric Spirituality, ppxi-xxii, SCM Press, 1993.
H.P. Blavatsky & Theosophy
HP Blavatsky
G.I. Gurdjieff & Fourth Way
GI Gurdjieff
S.L.M. Mathers & The Hermetic Order of the Golden Dawn