Would Any Of These Have That Real Rainbow Affect?

They all look like natural toning. Where the coin is stored can have affect on the surface. I'm curious about the lower left one under the jaw to the shoulder. What is that? A stain? or something else?

The best examples of rainbow toning are to be found on the white background of silver coins.
Rainbow toning is just a transitory state between bare new metal after striking, and full patination.

If you wish to arrest the inevitable progression to full patination, and preserve the rainbow toning at it's optimum appearance, spray the coin with clear acryllic laquer, then enclose in a hard acryllic screw sealed capsule of appropriate size.
The capsule is needed, because the hardened laquer can flake off in tiny pieces.

The hardened laquer is quite easily removed with a good soaking in acetone, if you wish to change your mind. The downside though, is that the toning will then recommence towards full patination.