I've been a FE for over a year now and I've seen testimony from just about every group you listed. Pilots for example are waking up the most of any of them. If you look into their gyroscopes, they can't possibly function on a spinning, Orbiting sphere. They can only work on a motionless plane. https://www.bitchute.com/video/hRBuIFBed0tq/

Most people are indoctrinated since they watch sesame street as a toddler to think we live on a spinning ball in a void, so they are not in on it. The Manhattan project and MK Ultra and 9/11 are good examples of how secrets can be kept. Not all FE's think this but I think the hyliocentric model is an important part of the mass delusion the Bible prophecies. If it were found that the Earth was flat and domed, evolution, relativity, and big bang would all be thrown out the window. Our creator would be proven to most people (although there would still be strife over who he is). The NWO and all its associates in various nations would lose almost all their power overnight when people realize how lied to they are.