What would cause this weird bearing wear?

So I am about to get ready to put my motor back together, and want to fix all the mistakes that I made the first time. One of those mistakes seems to have been a mistake when measuring the bearing clearance, I thought I did it right and that I had enough clearance, but I think it was a bit tight (I think anyways). But that doesn't matter anymore as new bearings are going in and the crank was turned, Ill just be more careful about measuring the clearance!

I never thought about this until a while ago, but the pictures are the main bearings, the rod bearings don't look like that, they seemed fine (replacing them anyways). There is copper showing very slightly on the edges, but opposite of each other. So copper shows on the top right on one side and copper shows bottom left on the other. What would cause this? bad crank journal, out of alignment main cap? Bend crank? The block was line honed and mains were checked so the block should be good, the main caps also fit very snugly in place, they are not loose at all. I was looking on the bearing analysis that clevite has and I think the most similar is the "out of shape journal."

With those bearings the crank was only polished, otherwise it was completely stock (checked over though) When I installed the cranks and mains I followed the instructions in the manual about how to properly seat them as well, I think that is mainly for the thrust bearing though.

The picture of the two bearings together is just one I found on the internet, its not mine, I just wanted to show what mine kinda look like, but to a much lesser degree. The front rear bearings didn't look like that, only the middle three did.