I understand that technology evolves and not everyone is the same, but the last 3 Macbooks I've had, going back to 2020, all zap me for some reason. I.e. when I move my hands over the metal casing I feel some sort of electronic vibration, and something similar happens when I tap the track pad or glide my finger over it.

Maybe it's a matter of whatever works well for 95% of the population, but as someone with more highly attuned senses its a little annoying.

Is there something Apple can do to isolate the charges/currents a bit better, or are there other models on the market that don't have this problem?

I've been a loyal Apple user since like...forever, but it's getting hard to go along with their engineering choices lately.

It’s likely to do with grounding. I’ve had it reliably in one location, but then with the same MacBook it doesn’t do it in another location. Probably grounding-related.

I also get this, only happens while charging. To me, it feels like a change in the stickiness of the surface.

do you wear Crocs or some other kind of thick foam shoe/sandal? do you live in a dry climate?

Does your charger have 3 pins or 2? It could be a grounding issue (which has gone on forever). Or you have carpets and plastic shoes? You are the problem. It is not dangerous, just annoying to those who sense it.