Both are cuttbows.
Cuttbows have spots spread more evenly over their body with varying degrees of "rainbowness" and darkness to the red of their cut. But more importantly, Cuttbows have a white leading edge to their fins, like the two cuttbows you posted.
Purebred cutthroats have more spots toward their tail end and don't have white on their fins. Living here in Idaho, we have a huge cutthroat population and hence, I see a lot of real cutthroats (Yellowstone and Snake River subtypes predominantly) and cuttbows from spawning with the planted rainbows.