I believe that Soror Bernstein was trying to state all the possibilities of what an egregore could be, but not specifically Angels. Words have different meanings when translated into different languanges. She is an expert on Mystical words. Her research takes her into various realms. Yes I agree with you that Dr. H Spencer Lewis did not use the word very often in his writings, but you can be sure he knew all about it. He was very definitely using the egregore in creating the "Cathedral Of The Soal", later became the "Celestial Sanctum:. His explaination of why the Celestial works is almost an explaination of the Egregore. This is an interesting aspect of Mysticism, we can go on and on. Powerful stuff.