If only!
The only monitor I designed incorporated width modulation using a Darlington series regulator controlling the voltage to the HO stage, with feedback derived from beam current. Rock steady size with a raster half height peak white, half black. That used a diode-split FBT.
Consumer designs (yecch!), using transistors, used a cheapo arrangement of a resistor in series with the supply, so the scan decreased with increased current draw, compensating for the increase in deflection sensitivity when the HV went down with increased beam current. Not perfect, but good enough for consumer TV.
Triplers were superseded by diode split windings, sometime in the 1980s.
Tube HO drive looked like a pulse with a (small) ramp sitting on top. That went away when tubes did. Transistor drive is just a rectangular pulse. Don't forget, also, that the output device (tube or transistor) is on only during the second half of the forward scan. The first half is supplied by the stored energy in the inductance circulating via the efficiency diode, both for tubes and transistors.
The thyristor HO scheme, developed by Siemens, was *really* weird, with a separate commutating coil. but still using Blumlein's inductive flyback principle for the actual scan. I had the original application notes, but they've long gone.