There is a monograph written and published in the 19th Century which describes and chronicles mysticism of the western tradition in historic spiritual practice movements. Based on writings of different groups and their mystics this is an interesting read. You can see there is often a merging between the three schools as they get personified in different expressions at different times in places.
We have good living examples of the three schools in the spiritual teachers we have here in Fairfield, Iowa or visiting us. Resident in Fairfield, Janet Sussman is a good example of the mystic modalities of a Mother Ann, founder of the Shaker ashram-like communities. Connie Huebner is a good example of the mystic leaders of the central European Amana Colonies people. visiting right now in Fairfield for a few days is David Spero who is a good example of the founding mystic of the Quakers, George Fox. Read Perkins and Wick as an introduction and overview to these schools in western experience going back even to Plato: http://books.google.com/books?id=Y6naAAAAMAAJ&printsec=frontcover&dq=Shambaugh+Annals+Amana+Society&source=gbs_book_similarbooks#v=onepage&q&f=false http://books.google.com/books?id=Y6naAAAAMAAJ&printsec=frontcover&dq=Shambaugh+Annals+Amana+Society&source=gbs_book_similarbooks#v=onepage&q&f=false Reference page: Communal Studies Forum https://groups.google.com/forum/#!forum/communal-studies-forum https://groups.google.com/forum/#!forum/communal-studies-forum
