In Liu's science fiction novel Three-body, which civilization is the strongest?

The following is my personal opinion, excluding human civilization, the dried-up fish, the Lord of the Rings, the cartoon girl in the constellation Bojiang, and the nebula civilization, there is no detailed description of civilization itself but almost only one concept:

The first level: completely pure civilization, no material entity, no pressure to survive at all, can come and go freely in the universe, similar to the existence of God, including Li Bai, mirror musician, frozen artist, and danger remover.

The second level: civilization that can realize dimensional operation but has not completely got rid of the pressure of survival can be subdivided into two levels. High-level can carry out dimensional dark forest attacks, such as Singh civilization, low-level can not, but can escape from the universe, such as three-body civilization.

The third level: civilizations that can fly faster than light and gain energy through annihilation of positive and negative matter, but sometimes have to wage war for survival, including carbon-based federation, silicon-based empire, divine civilization and bubble civilization.

The fourth level: civilizations that have not achieved superluminal flight, but can carry out interstellar migration, such as the Great Ring Civilization (devouring the empire) and the First Earth (brothers).

The strongest human civilization should be the kind in Messenger, which can travel in time, turn pure energy into matter, and be close to God.

Thank you for your adoption.