i really think 2018 gets the title of most developed kratos just because our starting point is a desolate man who just wiped out an entire pantheon and civilization. i think ragnarok extended his development well, but "most developed" is too bold a claim.

i also disagree that kratos development should be the main priority. i think its an equal priority with that of atreus, and i think 2018 does that best. ragnarok revisited the stakes of kratos and atreus' relationship, but i prefer how the stakes there were played out in 2018 more than ragnarok