I mainly eat berries too but can manage a reasonable variety of other mainly European type fruits like gooseberries, plums, greengages, small nectarines, and also kiwi fruit, about 1/3 apple, and possibly a couple of segments of orange. I try to eat all my fruit in small portions (50 -75 grams max) and eat with cream or yoghurt, and where possible as part of a meal rather than as a snack, and (of course!!) let my meter guide me.
Bananas are apparently one of the worst fruits for us as the growers select for high sugar varieties, to the extent that some
zoos have actually stopped giving them to monkeys as they've caused them to become diabetic!
I kid you not!
Robbity