Einstein didn't copy: Science is almost always a collaborative process with people building on top of each other.
When you don't give credit, as Einstein was famous for not doing, then it is copying. Had Einstein given the proper amount of credit, he wouldn't have the unreasonable levels of adulation he has today. Which was the OP's point.
As to the papers you list: Einstein was always a contributor, and a big factor in general. But the papers you cite are invisibly small compared to SR/GR. For anyone else, those papers would be worth framing. But Einstein basically fizzled in his later years. The big stuff he was working on -- trying to define space/fields/ether, and trying to unify the e/m & gravity -- produced zilch.