I’d like say upfront that t I’m NOT looking for any specifics about clearances, people or events. For better or worse, I love my country, and would never want to compromise it. I’m only asking in the intellectual sense, not in any specific way.

I’m making an assumption that there are various levels of top secret clearance. If I’m wrong, please let me know. I’m not asking for any specifics, please. I’m interested in your opinion on possible types of events ( I’m in the conspiracy theory area here: Currently ongoing conversations with Aliens, maybe Overthrow of a spefic government, absolute evidence that ( insert religious figure here) never existed, any possible life changing event ) and the president does not have the security clearance to be told about. Do you think that there are many people who know life changing information and don’t tell the president, and what type of person could have that type of clearance and from whom?

This is probably Wikipedia type information, with some deep research, so I believe I’m not asking for any information that isn’t readily available somewhere, and I would not in any way compromise the safety of our citizens by asking.