User blog comment:B214/Question and Answers 6/@comment-37402804-20181104095558/@comment-27083298-20181104185644

Actually Ishibumi did say who is in the Top-10 in Volume 13 and as for Great Red.

“Who would be among the top 10 strongest in the world that Vali was speaking about in volume 4?”

It was even written in the message that the fans are also debating about this. …..Seems like everyone are interested in it. I do have the setting of it just in case, so I will announce it here. Of course it is a DxD original ranking.

In no particular order Ophis, Shiva, Vishnu, Brahma, Śakra, Thor, Typhon (Or Fenrir), Hades, Aten, and Lugh.

That’s how it is. Great Red isn’t included because it is a creature who basically doesn’t fight“