There are very good vegetarian substitutes for gelatine, they're just more expensive. So gelatine content can vary quite widely by market depending on the number of vegetarians. Here in the UK it used to be in a lot more things 20 years ago than it is now.

> chocolate

Definitely not in anything like a bar of chocolate.

> ice cream

Oddly, this seems to vary a lot by country. It's rare in the US, though. Guar gum is common, though.

People who keep kosher or halal mostly avoid gelatin, so countries with notable kosher, halal, and vegetarian/vegan populations probably see less gelatin use.

Expert vegan here. No, gelatin is never in plain chocolates, but often added to diced coconut!

For chocolates it might be in things with foams or nougat. Definitely in marshmallows.

Ah. chocolates != chocolate

Usually nougat uses egg whites so it doesn't need gelatin as a protein. Marshmallows are arguably nougat, though, since they're also sugar bound with protein. Marshmallow cream usually uses egg.

All of the major nougat US candy bars I can find use egg and not gelatin.

I've seen chocolates with marshmallow in them.

In Ireland it would be very rare for me to see it in ice-cream or chocolate, and I'm fairly religious about checking labels. Plenty of sweets / jellies, but these days there are more and more vegan / vegetarian options.