Level 0: Advanced Rank
This rank is held exclusively for Organization leaders. If an organization leader drops their rank, they will be demoted. Unlike the other Tier ranks, the 0 tier has no sub divisions.
1st level: Captain/High Rank
Tier Level 1: This rank is for veteran captains. Captains of this level have mastered their bankai. This rank would also hold for veteran Horsemen of the Apocalypse, Veteran Human Teachers, and the top of the Hinrichten. Someone of Shunsui or Starrk's level would be an example of this.
Tier Level 2: This is for characters who are more powerful than 1-3, but not quite 1-1 yet. Vasto Lorde fall into this rank.
Tier Level 3: On this level, your character is on par with seasoned captains. Captains with great skill and great control and knowledge of their bankai would fall into this level. Some examples of this level are Byakuya Kuchiki and Grimmjow Jeagerjaques.
Tier Level 4: This is for characters who are more powerful than 1-5, but not quite 1-3 yet. Adjuchas transformed arrancar fall into this category.
Tier Level 5: Here is where you are on the same level as new Captains. Newly appointed Horsemen, Human Teachers, and New Circle leaders for the Hinrichten. Examples of this would be Mayuri Kurotsuchi and Aaronierro.
2nd level: Lieutenant/Moderate Rank
Tier Level 1: This is a level for the rare vice-captain who has obtained their bankai. Renji Abarai is a good example of this Tier. Adjuchas class Menos would fall here. Experienced Hinrichten Viceroys would be placed in this category. Elderly sins of the Apocalypse would also be classed in this group.
Tier Level 2: This is the tier level for a vice-captain who has mastered their shikai, but has yet to learn their Bankai. Rangiku Matsumoto is a good example of this.
Tier Level 3: This is for characters who are more powerful than 2-4, but not quite 2-2 yet. seasoned Hinrichten Viceroys would be placed in this category. Experienced sins of the Apocalypse would also be classed in this group.
Tier Level 4: This is a tier level for vice-captains Who have mastery over their shikai, but aren't even close to learning their bankai. The average vice-captain would fall into this category. Gillian class Menos would also fall here.
Tier Level 5: This level is for newly appointed vice-captains with a great mastery over their Shikai, but haven't fully mastered it's use yet. Marechiyo Omaeda would fall into this category. Fresh Hinrichten Viceroys would be placed in this category. Beginner sins of the Apocalypse would also be classed in this group.
3rd level: Officer/Low Rank
Tier Level 1: This level would be for a highly seated officer who has good knowledge of their shikai. Yumichika would be an example of this class.
Tier Level 2: This is for characters who are more powerful than 3-3, but not quite 3-1 yet.
Tier Level 3: This level is for the middle class seated officers. Most of these officers know their shikai, but have just learned it recently.
Tier Level 4: This is for characters who are more powerful than 3-5, but not quite 3-3 yet.
Tier Level 5: This level is for the lower seated officers, who can hear their zanpakuto's voice but cannot hear it's name quite yet.
4th level: Member Rank
This is the Unseated Shinigami, Just obtained their power Human, Garden variety Hollow, etc. It's the most basic Tier level. As with the 0 Tier, this category will not have sub divisions.