The two of you seem to be working under the assumption that there is such a general class as a "Dragon type" vessal, just like there are general classes such as tanks, rockets, bombers or whatever, and that any craft designed to operate that way would be a Dragon type fighter.
That doesn't work for the simple reason that the Dragon is a specific fighter class, not a general vehicle type. You didn't see the Allies using Messerchmitt 262s or King Tiger tanks operationally, do you? They may have copied some of the technology, but they don't use those vehicles. Those fighters and tanks that used the techology didn't become "262 type" or "King Tiger type."
Not only that, there is the fact that most of the technology used by the Dragon wasn't unique to that design. Things such as M/AM engines or human fighter cloaking were pioneered on the Excalibur (and the Kilrathi had cloaking long before that), fighters launching torpedoes is hardly unheard of, and even the Flashpak is possibly derieved from a weapon the Kilrathi developed for their Strakhas (page 90, TPOF novel.)
In short, there is nothing about the Dragon that creates a new class and special class, any more than the Excalibur created a new class of "planet destroying fighter." There might well be fighters raound that use the same technology as the Dragons, but they won't be "Dragon class" fighters, rather unique fighters in their own right. And seeing as most of the technology predated the Dragon (which was after all, developed with Confed resources and Confed know-how), it would be hard to even claim that these new fighters were derieved from the Dragon.
PS: I'm not sure what the fuss is about whether COnfed can see through cloaks in 2681 is about. The important thing is that the *Nephilim* can, which pretty much negates any advantage cloaking fighters have operationally.
Best, Raptor