They’re not the only ones. I’m also familiar with Florence Shinn, Lester Levenson, Zivorad Slavinski, Fred Dodson … and many alternate routes too, like Marc Allen, Trevor Blake, Tosha Silver, Jean Slatter, Gallery of Magick, The Essassani, Seth, Paul Selig, Luck Factor, and more.
I have not studied Joseph Murphy, but I think he was also a student of Abdullah, so not sure how different in principles would he be from Neville!
I did not choose ONE. I use principles & techniques from ALL.
Dragon guided me to learn from Vadim, because my Introverted Thinking likes to work with big picture Frameworks.
Reality Transurfing is NOT a method for manifestation, but a coherent philosophy that helps incorporate all the teachers & tools into a single applicable framework.
It’s study is optional though. One can get whatever they want following ANY of the above.