In no particular order (OK, alphabetical) there are certain knives that stand out for various reasons, specific, noteworthy or even difficult to define reasons - but they stand out nonetheless.
Becker BK2, BK4
Buck 110/112, of course.
Camillus SS military pocket knife
Cold Steel Trail Master
CRK Sebenza
Emerson CQC-6
KaBar Mk 1
KA-BAR military/USMC
Kephart knife
Leatherman PST and its progeny
Ontario pilot’s survival knife
SAKs, in almost any variety
Sodbuster
Spyderco Endura along with it's nephews and cousins