I have never played God of War, because I am a pure PC gamer, so i don't know the details. (I'd love to play the most recent one, but I'm not gonna get a console for a game, I won't cave to exclusivity deals on principle) But did watch some LPs of the latest one, and from what I do know, I think that is a sort of tenuous connection, tbh. What you describe isn't really unique to JIM, they are fairly broad themes that are shared with, but not necessarily derived from, JIM. They just share the same characters, derived from Norse myth, mostly. I mean the kid aspect, maybe, since Loki is technically supposed to be Odin's age... but.... I mean, they just dropped a tease that the
next Assassin's Creed will take place in viking age Scandinavia, and it will likely have as much in common as God of War did, given how much they borrowed from not just history, which the AC games always do, but also from Greek mythology for Odyssey, (especially likely since the tease had 'VALHALLA' written across it) and the new more RPG, narrative driven focus of the AC games. I think, of all things, Tales From the Borderlands had a more direct reference, even though it didn't have anything referring to Norse myth at all, because it actually quoted it in places, and the situation more closely resembled JIM, even if the names were changed, and it had a different ending. basically, Handsome Jack is the big bad of Borderlands 2, he's just,
the worst, and he was so popular he got retconned into earlier lore with the pre-sequel. Where he actually started as a good guy, and we saw him fall to the dark side. He died at the end of Borderlands 2. But turns out, he made a backup copy of his mind, which latched onto the protagonist of the game, Rhys, who was a cyborg so had cybernetic implants that Jack's programming could kinda live in. And he sort of talked to him during the story, and gave him information and helped him out at parts, and helped him to achieve the end goal. But.... he was using him. At the end, he tried to overwrite Rhys' mind with his own, and take Rhys' place. But, and this is where it differs, Rhys blocks the attempt, while saying "I win" and as I said, it actually quoted it in a few places. It's not one to one, but it was clearly heavily inspired by JIM, and they payed homage to it.
Yeah, at least we don't have long to wait, and there is Squirrel Girl to kind of tide us over until then, too. the Odin situation is weird. it certainly looked like a brutal attack and that he died, but solicits for other books refer to him as 'missing' or 'injured' rather than 'dead' so I am not sure if he even did actually die there, so it may not be possible for them to meet in the afterlife assuming Loki did actually die there. But it would make some narrative sense for them to spend time together in come capacity, I think.