I already know of dr manhattan, just read Divinity from Valiant and really enjoyed it’s take on a human -> godlike being. Specifically where they have and exert power over reality, rather than just having more energy to pew at a higher scale.
I always find godlike stories more intresting when it isn’t just them fighting at a grander scale and they actually use godlike powers to manipulate reality. Also when they start off as humans, arent born gods and haven’t already existed forever.
Miracleman by Alan Moore. It was continued by Neil Gaiman, but man, it’s like that book was cursed or something.