So I came across an image of a modded basic stock steel wheel off of the 2012 and later Beetles that I kind of actually like.
The 2012 and later stock basic steel wheels used on a variety of VW models are pretty much the same as the ones on the MARK IV ones with some minor variations.
However, I came across this one simple customized ones (below) that does a fairly decent job of homaging the 1968 and later 4 lug basic stock rims and hubcaps.
I really rather like them and with the right color scheme, I think they could work well on being retrofitted to an air-cooled Beetle.