Most HP 180 series also had the CRT above the controls, as does my old Yokogawa storage scope.
Yeah, that vertical / portable form factor with the CRT at the top was widespread in the '70s it seems, with the 5000 and 7000 series Tektronix-wise. Unless you specifically asked for a rack-mount version, the bench top version was vertical.... but come the '80's and the horizontal form factor with CRT on the left, quickly became the "norm", still true today 40 years later. Yokogawa is japanese (?) so maybe their "norm" evolved differently there, don't know... Just looked at their website, they make only two lines of scopes it seems, only the cheaper/slow models are vertical, faster ones are just like any Tek/HP high-end scope. Might be due to the very large LCD constraint though ! ....
Anyway, CRT at the top is definitely not the majority these days, by a long shot...
I don't really care I mean, I can live with the controls on the right ! I can shift gears in the car with the right hand after all, so turning a few knows on a scope is not that big a problem, I won't sure scope manufacturers !
It becomes less and less relevant with high-end modern scopes though, since the controls represent such a small portion of the real estate. 90% of the front panel s just one huge LCD screen which you can operate with touch more and more anyway...