There’s some pretty extensive precedent for god stat blocks in this and past versions of the game. Might take a look and see if you can’t steal what you can. Also, if you ARE facing gods against gods, I would say you’d really want to make everyone insanely OP. Like, 600hp minimum. Make the mechanics serve the genre

2

Look up Storm Giant Tempest Caller. Their stats would make a good starting point.

1