What is “Majestic” level clearance?

"Bob Lazar got a majestic clearance.
It's on the History channel right now.
Google majestic 12."
http://www.abovetopsecret.com/forum/thread515020/pg1

"First before I get into my question I would like to ask: How do the people here feel about Bob Lazar and his story? I personally have a hard time denying it but if I had to go the more scientific route he obviously has like no proof. But I do get a sense of legitimacy from him.

My main question then is, does anyone know anything about the “Majestic” level clearance that he’s mentioned before?"
https://www.reddit.com/r/UFObelievers/comments/ih3he0/bob_lazar_and_majestic_level_clearance/

"Majestic, in the chart above, is the highest clearance, giving full access to all files of interest. This may have been a temporary clearance created for the Majestic 12 group, also known as the Aviary, under the Truman Administration after the Roswell, New Mexico crash."
https://www.blackdiamondsocialclub.com/post/2017/03/11/above-top-secret-security-clearances

"Lazar said that he was one of just 22 people who were cleared to work on the craft, having been granted "majestic clearance"."
https://www.higgypop.com/news/bob-lazars-ufo-legacy/

"I had Majestic Clearance. Majestic Clearance was designated as clearance 38 levels above Q clearance, and Q clearance is the civilian top secret clearance"
https://divulgaciontotal.com/w/?p=3698

"Lazar noted that he had 'Majestic' clearance.

This clearance level was 48 levels above "Q" clearance."
http://www.zamandayolculuk.com/lazarstory.htm