I wouldn't call them "classes", just a name describing
how they work or what they do.

That's why they're called a "class" since everyone knows the output is AB.

The word "class" has several meanings. One of them has an implication that
is different from "type". Class A -- conduction through the full cycle -- is
not called A by accident.


They might be true, but that wasn't the point I was making. There is
such a thing as "product differentiation", and you don't make yourself
look different by appearing to copy someone else's feature.

Class G and H achieve similar results by different means. The distinction
is REAL not marketing.

But that isn't the point. If company A used the same circuit as company B,
it would be foolish for them to use the same designation. That was the
point, not whether "class" G and "class" H are the same or different.