"Jesus Christ, Himself, can send a bar of steel down from Heaven.
It will only be as good as the heat treatment it gets on Earth." Jerry Rados.
With that in mind, consider that a high quality steel, which is forged, heat treated and ground poorly, will make a worthless knife.
Conversely, a low grade border line steel, given due attention to forging, thermal cycling, heat treating, geometry/grinding, etc., will make a trusted companion in the field which is easily sharpened after use.
Part two of this overly long-winded response to your simple question would be from the mouth of a highly regarded cutlery "expert" in the world of swords and metallurgy, Roman Landes:
"Geometry cuts. (Not steel type) Heat treatment determines how long."
So, I think you might ask not what is the best steel type for a hunting knife, but, rather WHO!! knows how to work with their chosen steels to make a good hunting knife?