Sapta Chatusthaya
This is Sri Aurobindo's yoga as presented in the Record of Yoga I and II. For my own purposes I have mind mapped the all 7 groups of 4 elements. Then each of the 7 is mapped out separately. I find for myself this just helps to keep the larger overall view. The pictures were chosen to help aid the memory by being engaging. Though there is some elements of Sapta Chatusthaya in the Synthesis of Yoga, the Record of the Yoga is the main source if you become drawn to it.