I think you are with the word "preparing" not asking for recipes here, I think you are asking for the taste impression.
I think that Pawpaws taste like a mixture of melon, banana, mango and a little bit of pineapple. I think the melon taste predominates, but I have friends who think the mango taste predominates, others think it tastes like a mixture of banana and passion fruit. Of course there are differences between the varieties in taste, fruit size and the ratio of seeds to pulp. In any case, they have fewer seeds than cherimoya, I think. They are also not as juicy as a ripe cherimoya, but more creamy. The taste of a cherimoya I would describe as a mixture of pineapple, some melon, some strawberry and banana. I can't taste the mango, but I can with pawpaw. By the way, there are also pawpaws with an unpleasant aftertaste or taste, especially the Sunflower variety. But I don't know any Paw-Paw variety with fruit acid.