Magnum 500's ???

See pic. The wheels with the tire and in the middle look like Magnum 500's but what are the other two? The spokes are skinnier and don't widen out like magnums do. Any clue what these other two wheels are??

Buick & they appear to be 15" - are they 4-3/4" or 5" bolt circle?

What are the bolt pattern on the other two? How wide? They could be aftermarket, Olds, Mopar, or FoMoCo.

Not sure...these are for sale and the ad stated they were magnum 500's. Clearly two of them are not... Thanks for the help.