The pawpaw can come pretty close to that.
Pawpaws are way more tropically flavored than apples in my experience. Closer to pineapple
Banana texture is the worst. When I try to eat a banana, a lot of times I end up just chewing it to death, because my body just will not allow me to swallow it.
Cherimoya?
This already exists. There’s a banana (in Vietnam, but I’d assume not just there) that’s smallish and rounder than most others which has a distinctly sour taste that reminds me strongly of apple. Ymmv, taste being a very subjective thing.