I disagree.
I don't believe you can define any type of clean as a "push" or "pull". But if you were going to look at the primary movers of the bar in a hang clean, you'd see that the traps, hams, and calves are doing most of the work. Look at the position a lifter is in during triple extension (the second pull) and this is apparent.
If anything cleans work your traditional "upper pull" muscles more than the traditional "upper push" muscles. The rear deltoids are involved to an extent along with the heavy involvement of the traps. There's virtually no involvement of the chest muscles or the triceps.
It's splitting hairs though - the most important thing is to include them somewhere.
