I have tried a Lightning mag charger, and tbh it was crap. It’s fine if you only want to charge, and the device is going to be in one place untouched, but the magnet is so small the connection isn’t that powerful, and there’s no data transfer*, so trying to use such a lead in a car for satnav or music via a radio wouldn’t work.
I think the best option is magnetic induction where the device just sits on a pad, with BT for data, or CarPlay or Android’s equivalent.
I’ve got magnetic USB chargers for batteries and a flashlight, both work really well, but the batteries or the flashlight just sit in one place, undisturbed.
* the one I tried wouldn’t transfer data, but it was a fairly cheap lead, and cheap Lightning leads often don’t transfer data either. The other issue might be how many ‘heads’, and which species, you get with a lead, otherwise you might end up with a whole bunch of redundant leads because you only get one or two ‘heads’ with each lead, and those of a specific species, ie Lightning, USB-C, USB-A, Micro-USB, (and there’s three or four of those as well)…