Stephen Chang has written a 3-part series on “A Journey into Awakening,” ‘Who Am I’ in the different stages of the process. While he frames some things slightly differently from how I do, he writes in a similar style: what he’s learned from his own experience.
Part 1 talks about the ego and its development. He talks about Witnessing as the first stage of Cosmic Consciousness, followed by actual Self Realization.
Part 2 explores Cosmic Consciousness further, then Unity stage.
Part 3 talks about Unity into Brahman. He touches on Refined Brahman.
I know his process has gone further, but he hasn’t covered that yet.
I wrote a similar multi-part series in 2008.