My requirements for a field knife are: blade between 3 and 4" and handle has texture/good retention when wet. For a deer, there is no reason to have a 6" blade because there is no need for reach and actually a large blade is more dangerous because it is harder to maneuver (like parallel parking a compact car vs a limo).
My current 2 favorites are the Spyderco Stretch and Spyderco Delica.
But those are folders.
If you want a fixed, then I would pick any fixed blade that is smaller (3 to 4 inches), has a hand guard, and is linen or canvas micarta.
When micarta gets wet, the fabric expands slightly outside the epoxy matrix and it actually becomes more grippy.
Brand and blade steel is not that important and personal preference, so long as it is not "convenience store" quality. Just any knife from a brand you've heard of.
I love Spyderco but I don't think they make an micarta knifes. Their fiberglass reinforced nylon handles are very textured though.