That’s the answer, the gnocchi pastas imitate the shape of the potato gnocchi. I also wouldn’t really call potato gnocchi pastas, like if I invite people to eat and say I’m cooking pastas, nobody’s expecting potato gnocchi. But I think in Italy they’re in the same aisle as fresh pastas. The thing is - and op’s picture is correct - that italians actually differenciate between different shapes of pasta, for the simple reason that pasta shapes have functional reasons and different shapes correspond to different dishes.