You mean stuff you'd get through the oculus PC app?
Both! Quest native versions launch directly on the Frame through Lepton (Android emulation) and PC titles launch through RiftLift (Linux) and Revive (Windows) via streaming.
Like Dreams.
With shadPS4 making such big strides it would not surprise me if it works on PC next year. Would also not surprise me if somebody builds a community server for PC like they did with Super Mario Maker and the Souls titles.