In terms of leading edge, we're talking all AMD CPUs, all of the high end NVIDIA GPUs, all of Apple's M-series chips and iPhone chips, Qualcomm's fastest/most efficient mobile chipsets and more.

Lagging edge chips from China that are commonly used in the west are typically on larger nodes that can be more easily replaced (the tech is easier to replicate, the costs are much lower), stuff like microcontrollers, MEMS sensors, ADCs, DACs etc, stuff that doesn't have to be the absolute fastest it can be, just has to work well and be cheap.