The "hinge" action in the olympic lifts occurs in the second pull/explosion. The first pull is more like a squat.
Actually if you want to break it down precisely... for most people a snatch or clean is:
1st pull (floor to knee): squat
Readjustment (knees to hips) hip hinge
Explosion (from hips to projection) "squat" (actually more like an explosive leg extension/jumping action)
Now, in people with long limbs a snatch/clean can be more hips dominant but it's still 3 different actions when it's done properly.
So a snatch/clean is hard to classify, The reason I put them as a hinge is that in a snatch or clean the "squat" portion is relatively underloaded. For example even if you are a good snatcher your power snatch will be about 60% of your squat or 70% of your snatch deadlift.... if you aren't super efficient it will be closer to 45-50 and 55-65%.. so the first pull isn't really challenging.
Now, a snatch deadlift would be more of a squat and a high pull from blocks/hang would be more of a hinge (even though it still have the explosive final leg extension).