Originally Posted by Gabe15

There is no way to actually know, and the number is somewhat philosophical as it depends on what you define as a unique, distinct type. As far as “naturally occurring” edible cultivars considering phenotypic diversity and not just genetic diversity, I estimate around 2,000-4,000 seems reasonable, but if you consider all the various populations of wild bananas and their differences, and then material generated in breeding programs or through tissue culture selection, it would be in the 100,000s or millions easily.