Some are more sweet like "Prata" some are bigger like "Nanica", some are smaller like "Banana ouro" or one that smells somewhat like an apple called "banana maça".
There is also one for cooking "Banana da terra" used to make fish dishes mainly.
If you go to farmers there are even more.
It's probably a cultural thing, in the Netherlands you can find mainly 2 types, regular international one and the Cooking kind because of Asians mostly, which makes me really sad, Australia is like that as well.