Here is the list. Watch out for spoilers.

1. Great Red and Trihexa: The true dragon and beast of the apocalypse are obvious choices. Great Red is feared and left alone by the rest of the pantheons while Trihexa is the one that could destroy everyone else.

2. Ophis: The endless dragon holds the second place because she has endless power but she doesn't really use it to its fullest potential. She lost to Great Red due to the lack of control over her powers and the lack of ways in how to use them. She lacks training and a reason for fighting except for her current objective. She is the only immortal in all of the realms due to her connection to the dimensional gap. She will continue to exist even when everyone else dies.

3. Ddraig/Issei Welsh: After escaping the booster gear and having been blessed with the powers of Great Red and Ophis, he stands as something that rivals Shiva who has yet to appear in the story. He still growing at the moment.

3. Shiva: The destroyer and strongest Hindu god. He can kill most of the cast if he wishes. He holds several abilities that make him the strongest god at the moment.

4. Vishnu and God of the bible. Vishnu is the one that holds the strongest defense amongst the gods and the god of the bible was the one that sealed Trihexia.

5. Zeus (current time) and Odin(wartime and current). These two match each other in strength, experience, and power. Although Odin has lost his youth he still is the king of the Norse gods like Zeus is the head of the Greek pantheon.

6. Brahma, Indra, Quetzalcoatl (current), Angra Mainyu, and Susanoo (War time). All of them are practically around the same strength. Bramha and Indra are just slightly above the rest. Susanoo is the current leader of the surviving Shinto gods (He is sleeping alongside the rest of his pantheon due to his injuries from the previous war). Quetzalcoatl is the only remaining deity from the Aztec/Mayan pantheon after the war (Mayan and Aztec gods were closely intertwined due to the closeness of their realms). Angra is practically the big bad of his pantheon and he has survived the ongoing war with the Persian gods for a long time.

7. Crom Cruach, Albion (unsealed), and Thor (current). All of these match each other although Albion can easily jump into the 5 place due to his poison and abilities. Divide and reflect are easily some of the most overpowered abilities in the whole series. These abilities and the ones that Ddraig has (Boost and penetrate) are the reason why it was so hard for the gods to kill them in this story. Crom Cruach is the strongest evil dragon and an insane opponent that few can match. Thor is Odin's son and one of the most feared gods due to his insane powers and hammer.

8. Sirzechs, Ajuka, Michael (current), and Azazel (current). Sirzechs and Ajuka have surpassed the original satans so it is obvious why they are placed in this spot. Sirzechs can destroy a star but his powers are still too much for him to go all out for long periods of time. Although Ajuka doesn't hold the raw strength that Sirzechs has, his own powers are insanely broken. Michael and Azazel are the leaders of their factions. Both survive the war and are practically two sides of the same coin. They are insanely strong, Michael has his own holy armament and Azazel has his own inventions that are yet to be seen. Azazel lacks a holy armament but he is a former seraph. They can destroy a planet but the main reason as to why they are in this place is mostly due to their experience as warriors.

9. Hades, Poseidon, and other similar gods. Can match Sirzechs and the others if they push themselves to the limit.

10. Aten and Lugh. Both are the strongest ones of their pantheons due to being some of the few survivors.

This is the current scale of power for the story. Even those in rank 10 can destroy a planet with their powers. The only character in the list that is dead at the moment is the god of the bible so you can expect the appearance of some of these characters. Tiamat and other dragons are not here but Tiamat will join the ranking once she goes through her own skin shredding process. She has been blessed with some power by Great Red and her place after she comes out of the egg would be around the 9 to 8 place. She has her own abilities like most dragons. Gabriel easily falls into 8th place alongside her other brothers but the rest of the seraphs such as Metatron fall in the 9-10th place. Baraqiel, Shemhazai, and Kokabiel are not even close to joining in. They are strong but not even close to the ranking. Vali is going to join later on, really late.