Imo the power creep isn't as blatant as in Naruto. Yet. Where even the likes of Hashirama (Yonko equivalent) became like ants compared to a Juubi Jinchuriki who in turn was far outclassed by the Ootsutsuki alien who could destroy the planet, trap it in a world wide illusion and create dimensions.
Imu still seems within reach, even though he and the other EOS main characters will be decisively above the Yonko.
It will be like this:
Hagoromo/Kaguya> Earth God and Sun God
Ashurs/Indra> Imu(Earth God DF) and Joyboy(Sun God Nika).
You can bet your money that the real Earth God and the Real Nika are above Joyboy/Imu.
They are probably the true real Gods, capable to destroy the world.
Imu and Joyboy are also semi gods, but probably not on the same lvl as the real versions..
The only thing I try to fit into these monsters, who the hell is Davy Jones version?
Given the Earth God(Devil) is Imu fruit, Sun God Nika is Joyboy fruit, which power had Davy Jones from the first world??