>>2358281I think smaller knifes with a a thick spine and one-sided are good for bush craft. Machetes, kukris, bowies are good for batoning and larger wood pieces. A Ka-bar is a good compromise, cause you can strike ferrocerium with the spine, do some carving for spindles, and if you really need too, baton a dry piece of log in half.
People make self-knifes with 1095/O2 carbon steels, down side is these knives will corroded if not oiled, and can start pitting. Stainless steels are nice cause they can take a bunch of chemical abuse from a dirty environment, so it shouldn't be too important. Grinding your own knives can be good too, so a portable whetstone and ferrocerium rod make a good addition to a knife, cause you can put all kinds of grinds on a knife. For instance a round grind if you do a lot of chopping, a wood-carving grind for a plane edge, or a really narrow grind for scoring and fileting.