I can get behind these rules to be honest. I think panini would be a ciabatta or something like that.

I hadn’t realised that the American grilled cheese was basically a sandwich toasted and you’re quite right to point out toasties are sealed all around.

I wonder do Americans eat toasties. I’m reluctant to assume your country of origin.

We don’t call it a grilled cheese in the UK. It would be a toastie, even if you added ham it would still be a toastie. A panini is something else I believe.