I did read the--wow, really fine, light--print on the Apple plug and it seems to meet the requirements stated above.

So I'm going with just the physical plugs that provide the right shape, since I already have them.

Thanks again, one and all.

On a Mac since 1984.
Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.