To chime in again on the "commando" vs hunter theorizing, I would say the "hunters" have not much resemblance to the Bo Randall Scagel inspired pre-war knives. The wartime knives have the speedier production and stronger attached handle we know today. And the War Department would have taken a very dim view of an abuse of the dispensation on critical materials being sold for rich civilian hunting use. The knives were likely sold for military use (or should have been), and perhaps differ from one another simply by features for which a customer was willing or able to pay, or even desired?

As for current name, 4-8 fighter or 4-6 fighter, is it possible simply because made from a #4 knife blank?

And one late point being that of course the famous and infamous and rich and powerful continued to have access to knives from the shop, witness movie stars sporting about with them and them not in service, but in the main, the vast majority would have been destined for those with military orders, designs had not settled into anything truly definable and customer requests as for detailing or even totally new designs such as a 10" scimitar were honored without hesitation. So I would hesitate to draw any firm conclusions as to names of knives fearing there were none to reach.