Robert Waggoner
https://www.goodreads.com/author/show/15210445.Robert_Waggoner
Waggoner also offers an online class on lucid dreaming, as you know. Have you read his book?
https://sethcenter.com/collections/online-seth-dream-and-lucid-dream-course
I have read and enjoyed both of his books.
Ive taken his classes, watched many of the videos of him and interviews out there, reading his tips book.
I have also read "Astral Dynamics", by Robert Bruce years ago. Great book think I will flip through it again as well.