I'm not going to count, but for sure not Nikon Pro f/2.8 lenses,,,
I was referring to Nikon lenses,,, Specifically the 70-200mm AFS FL f/2.8 when it came out there was a lot of comments,,, because of the zoom ring being on the front,,,
Yes, but that's a lens that is designed for hand-holding so extending the left arm further makes it harder to hold and follow action, so the earlier design was easier to use. But the 120-300/2.8 is probably not light enough to hand hold anyway, so the left arm doesn't have to support its weight and the position of the zoom ring doesn't matter as much.
Let's take a look at other zooms that reach 300mm focal length:
Canon 200-400/4: zoom is front, focus ring back.
Nikon 180-400/4: zoom is front, focus ring back.
Sigma 120-300/2.8: zoom is front, focus ring back.
Nikon 80-400 AF-S: zoom is front, focus ring back.
Canon 100-400: zoom is front, focus ring back
Sony 100-400: zoom is back, focus ring front
Sigma 100-400: zoom is front, focus ring back
Tamron 100-400: zoom is front, focus ring back
Sigma 150-600: zoom is front, focus ring back
Tamron 150-600: zoom is front, focus ring back
I would therefore argue that having zoom in front is the norm in this type of lens, and of the current mainstream long zooms, the Sony (which has the zoom ring behind the focus ring) is the exception.