Per 
Levels 1-5
Level 0: These are mainly janitors who cant access anything without permission.
Level 1: These people are given access to most areas.
Level 2: These people are given access to more areas.
Level 3: This is the first level that is given to Security Personnel
Level 4: Classified information
Level 5: personnel who have access to the entire site except for certain areas that will require O5 counsil approval. The rest is REDACTED to your knowledge
SCP classes
Safe: Safe doesn't mean that they are harmless, it just means that they can be contained easily.
Euclid: Mysterious to the foundation, nobody knows what the SCP might be doing or when the SCP is trying to escape.
Keter: Poses threat to man-kind, they usually can do an XK end-of-the-world-senario (end of the human race)
Apollyon: These SCP's are extremely hard to contain and pose a threat to man-kind. e.g Scp-6789 Nickname: Siren Head
Classes
Class A: Class A personnel are those deemed essential to Foundation strategic operations, and are not allowed direct access to anomalies under any circumstances. When circumstances require Class A personnel to be in direct proximity to such anomalies (such as in the case of facilities housing containment units), Class A personnel are not allowed access to the areas of the facility containing such anomalies and are to be kept in secured areas at all times. In the case of an emergency, Class A personnel are to be immediately evacuated to a designated and secure off-site location. O5 Council members are always Class A personnel.
Class B: Class B personnel are those deemed essential to local Foundation operations, and may only be granted access to objects, entities, and anomalies that have passed quarantine and have been cleared of any potential mind-affecting effects or memetic agents. In the event of a containment breach or hostile action against a Foundation facility, Class B personnel are to be evacuated to a designated, secure off-site location as soon as possible.
Class C Class C personnel are personnel with direct access to most anomalies not deemed strictly hostile or dangerous. Class C personnel that have had direct contact with potentially mind-affecting or memetic properties may be subject to mandatory quarantine and psychiatric evaluation as deemed necessary by security personnel. In the event of a containment breach or hostile action against a Foundation facility, non-combatant Class C personnel are to either report to secure lock-down areas or evacuated at the discretion of on-site security personnel in the case of a site-wide breach or other catastrophic event.
Class D: Class D personnel are expendable personnel used to handle extremely hazardous anomalies and are not allowed to come into contact with Class A or Class B personnel. Class D personnel are typically drawn worldwide from the ranks of prison inmates convicted of violent crimes, especially those on death row. In times of duress, Protocol 12 may be enacted, which allows recruitment from other sources — such as political prisoners, refugee populations, and other civilian sources — that can be transferred into Foundation custody under plausibly deniable circumstances. Class D personnel are to be given regular mandatory psychiatric evaluations and are to be administered an amnestic of at least Class B strength or terminated at the end of the month at the discretion of on-site security or medical staff. In the event of a catastrophic site event, Class D personnel are to be terminated immediately except as deemed necessary by on-site security personnel.
Class E Class E is a provisional classification applied to field agents and containment personnel that have been exposed to potentially dangerous effects during the course of securing and establishing initial containment over a newly-designated anomalous object, entity, or phenomenon. Class E personnel are to be quarantined as soon as possible, monitored, and screened for potentially harmful changes in behavior, personality, or physiology, and may only return to duty after being fully debriefed and cleared by psychiatric and medical staff.
O5 + Director
O5 COUNSIL
The O5 Council refers to the committee consisting of the highest-ranking directors of the Foundation. With complete access to all information regarding anomalies in containment, the O5 Council oversees all Foundation operations worldwide and directs its long-term strategic plans. Due to the sensitivity of their positions, O5 Council members must not come into direct contact with any anomalous object, entity, or phenomenon. Furthermore, the identities of all O5 Council members is classified; all council members are referred to only by their numeric designation (O5-1 through O5-13).
Site Director
Site directors for major Foundation facilities are the highest-ranking personnel at that location and are responsible for the continued, safe operation of the site and all of its contained anomalies and projects. All major departmental directors report directly to the Site Director, who in turn reports to the O5 Council.
MTF (Mobile Task Force
There are several MTF groups. Nine Tailed Foxes are used when there is a MAJOR containment breach. The rest of the MTF is classified to your information.
