Phil Schneider was an insider whom became popular to conspiracy theorists in the mid 90's. His lectures were made popular by Al Bielek and the Montauk insiders who worked at the underground facility underneath Montauk, New York, Phil Schneider had a very unique understanding of the facilities beneath basement military facilities. He also understood the exopolitical situation and the existence of ETs underground. A topic that he also talks about is the topic of treaties. Underground-Surface treaties are the main reason while non-human looking entities never walked the planet openly during the modern era. His lectures verified the existence of small grey entities that appeared to be slaves as mentioned by the Montauk insiders of the early 90's.
More Information on Montauk Insiders - https://earthascends.blogspot.com/2014/09/overlords-of-illuminati-understanding.html