Is there a way to make one variant affect another

Hello,

I have a client who sells shoes. She wants her customer to be able to select what sizing convention they want to use (American, UK, EU) and have that selection dictate which size options appear in the sizing dropdown. Any help, advice, plugins, or workarounds would be greatly appreciated. Thank you

I know of no code that currently does this and I don't have a solution but some observations.

I think it might be possible to come up with some code that could do this.

The idea would be to have some code monitor the size dropdown and store the last selection in localStorage (it's a browser thing). Then when another product detail page is loaded the code would attempt to pre-select the size option previously selected.

The storage would be per browser/device. If a site visitor made a selection at a session, then went to another session/browser/device, the selection would have to be made again. So this potential effect would be an aid per shopping session.