Most-often mentioned? Hmm, if I were to guess:
Large fixed blade: Busse Battle Mistress
Military-style: Kabar, Cold Steel SRK
Others: Benchmade Nimravus, Spyderco Moran
The Fallkniven knives get mentioned frequently, but there's no one Fallkniven that gets mentioned all the time. For any particular niche, up to a 7" blade, the particular Fallkniven in that niche will get mentioned. Says something good about Fallkniven, even though it drops them out of the "most popular single model" popularity contest!
Joe