I agree on stockman and barlow patterns - they were the first that came to my mind, and that is what I remember virtually every farmer and outdoorsman man carrying when I was growing up. I guess a trapper would be number three.
If we're talking fixed blades, then what I think of is a small clip point with a stacked leather handle.
If we're talking fixed blades, then what I think of is a small clip point with a stacked leather handle.