The answer is probably a no, but considering that Eternals seems to be Gods and there is one that awfully reminds me of Aatrox, I'm really interested in whatever Riot has to tell us about them
https://nexus.leagueoflegends.com/wp-content/uploads/2019/08/05_The-Warrior_tnxw1edr2mbv53vmh0sz.png
The Trickster reminds me of the Mageseekers
And i find interesting that he has a rose on his hand...
Most likely not but mentions of them in stories would be really nice.
Reading the dev post, the purpose of these Eternals is quite evidently just a cosmetic feature/flair for the new achievement system. Despite how the segment explains that they're so claimed Runeterran Gods, they clearly aren't based on the specific mythology and world-building established by the lore and the respected people who write it. Instead each Eternal represents a class archetype that exists purely for categorization of champions, something of which is relevant only to the game.
I'll hazard a guess, I cant imagine the narrative department was involved in the creative development of this new project. This whole thing feels similar to the disconnect that exists between Runes in-game and the more creative use of World Runes in-universe.
