Since this world is infinite there are an unlimited number of power level systems here, with every world having their own, and only similar worlds having the same energy and present in the same universe may have the same power level system, under the influence of the universe's will (the system).
Still after an unknown amount of time a common broad power system was accepted across the majority of the known space
(*I'll only be writing the common power system and the system that Orion's world follows)
Ordinary life forms (Unawakened)
The common people, those who have not yet absorbed any energy and/or haven't started walking on the path of evolution.
(*In the starting of the story there are no Unawakened people on earth, as everyone was forcefully induced with mana when the world awakened. But any child born afterwards in this world will be born as an Unawakened being, in ordinary circumstances, and will need to absorb energy and start on the path of evolution to move to the next level, and get access to the system.
Planar Lifeforms (Rank: F - A)
These are the people who have started to cultivate power and embarked on the path of evolution.
They are beings who are dependent and confined to their planet.
Planetary Lifeforms (Rank: S, SS, SSS)
These are the people who have started to become independent of their home planet, they can survive in space for some time.
This is more of a transition phase between the planer lifeforms and the stellar lifeforms.
Stellar Lifeforms (Rank: Epic, Myth, legendary)
These are beings who have completely ascended their planets (unless it's a tier 10 planet) and can traverse interstellar space unaided. They have the power to destroy stars and only be accommodated by mid level. This is a foundational level, building your foundation in preparation for the next level.
Solar Lifeforms (Rank: Star, Moon, Sun)
An important level, where you create a mini world inside your body, increasing your strength and command over energy greatly.
Galactic Lifeforms (Rank: Knight, Lord, Baron, Viscount, Duke, Grand Duke)
Universal Lifeforms (Rank: Prince, King, Emperor, Imperial)
And so on… (more will be added later)