Yep, the picture you labeled "female flowers" shows a trait pretty specific to Pisang Awak types (as far as I know.) The pedicels are purplish when freshly emerged, but that color doesn't last very long after emergence. Wasn't sure about the knuckles from previous pic, details got messed up by image compression.
Your guess on your false Ice Cream's identity is probably correct. Because they're good in so many ways, Pisang Awak types are propagated extensively. As a result of random mutations adding up over time in the different lineages, there's a lot of sub-cultivars out there. It's like a game of telephone where the message is slowly changed as it passes between people.
I'm doubtful on the accuracy of some info in this seller's website, but it does showcase examples of several Namwa variants:
https://www.bkinterplants.com/index....usa-fruit.html