It's preference. I think the cameras on the non-pro iphones are so ugly -- especially the diagonal design. The pro cameras look ok to me. Can't not see my old college stove when I look at it, but I don't think it's too bad.
I, too, am biased but prefer Pixel's camera layout. Visually, I like the symmetry of the camera bump on the back of the device. Functionally, the symmetrical bump means the device will not rock on a table and it's a nice place to rest your finger and support/handle the device. A design decision that's unique and has some (small) utility.
Tier list:
Good: Pixel line, any phone with no camera bump
Ok: iPhone Pro
Bad: Samsung's many iterations, iPhone 2 camera vertical layout
Horrible: iPhone 2 camera diagonal layout