Could a Rioter give a bit of insight on how Graves is supposed to function?

It feels like Jhin has some slight overlap with Graves. Not aesthetically or gameplay-wise, but in the sense of being a carry that doesn't scale with attack speed in a direct sense, and is built to burst carries with single, powerful autoattacks.

While Jihn's kit is very clear, Graves seems to be a bit more muddy since he scales extremely poorly with AS, though he does want the crit on AS items. Additionally, he occasionally wants to build tanky, but then loses much damage from it.

Could someone please explain how he's meant to be built and played?