Off the top of my head, as an exercise naming just the individual models, not the number or variations:
SAKs: soldier, scientist, spartan, climber, yeoman, original golfer, manager/voyager, vagabond, rogue, rally, farmer, small tinker, super tinker, classic, manager II, rambler, signature, champion, swisschamp, explorer, compact, minichamp. I'm sure I'm missing a few. And there are a few I can't id because they are too old. And yes, I can identify the ones I do know by sight.
Leatherman: Core, Wave original, (Yeah, I need more

)
Spyderco: Spyderwrench
SwissTech: Microtool, Utili-key