I think you may be overstating human creativity. There are plenty of visionaries among us who create new concepts, but the vast many of us are -boring-. We share the same memes and when we try to make our own memes they fall flat. How many people do you know have tried to write a book, and it ends up being rife with established tropes? How many hit songs use the same four chord progression? When was the last time you experienced something -truly- unique? It's been a long time for me, that's for sure.

So I don't think "making something totally unique" is the best metric for AGI. Being able to infer things? That's where I'm at. But I'm not an expert, so don't take what I'm claiming as gospel