I think you’ll find supper in common usage in the US but always as the same meal as dinner which is the evening meal.

Dinner is definitely most common near me but I wouldn’t blink if someone asked me over for supper or said it’s supper time.

Same here (also USA). My parents (born 1930s) say breakfast, lunch, dinner. My grandparents (born 1900s) said breakfast, dinner, supper. My grandmother asserted that her usage was more proper.