Subgrades will be ten stars
Sixth Rate: Silver, Yellow, Red, Purple, Black
Fifth Rate: Mortal, Spirit, Earth, Sky, and Heaven.
Fourth Rate: Lord, King, Emperor, Saint and Sovereign.
Third Rate: Holy, Ethereal, Mystic, Legend, and Mythical.
Second Rate: Nirvana, Divine, Celestial, Immortal, and Godly.
First Rate: Sacred, Eternal, Infinite, Origin and Forbidden.
Basically, first rates are on the top while sixth rate are the lowest rates. To differentiate it better 1 fifth rate of the same level is equal to 10 sixth rate of the same level. Example; 1 Mortal Rank is equal to 10 Silver Rank
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[UPDATED!!]
I had already fallen in love with these names I came up with so I will not be changing anything aside from doing it like this. ↓
Sixth Rate: Silver→ Yellow→ Red→ Purple→ Black
Fifth Rate: Mortal→ Spirit→ Earth→ Sky→ → Heaven.
Fourth Rate: Lord→ King→ Emperor→ Saint → Sovereign.
Third Rate: Holy→ Ethereal→ Mystic→ Legend→ → Mythical.
Second Rate: Nirvana→ Divine→ Celestial→ Immortal→ → Godly.
First Rate: Sacred→ Eternal→ Infinite→ Origin → Forbidden.
How's that? ^_^