Fixed Blade: Mora Companion
Folder: Opinel #10 Inox
Longer version...
Mors Kochanski, the guy who wrote the book that brought the term "bushcraft" to be what it is today, was pretty clear about the need for a bushcraft knife to be fixed blade to do the things he described. He often referred to a knife as a sharpened pry bar with which one works wood.
https://www.morskochanski.com/books
As others have noted, the Mora Companion is an insanely good bushcrafting knife.
This said, I don't think "bushcraft" is the same as "general purpose knife for being in the woods". In particular, I don't think a fixed blade is essential, particularly if you limit fire making to making shavings (and give up on splitting wood with a knife) and doubly if you rely on modern backpacking equipment for shelter and cooking.
There are several qualities that I think make sense to focus on from a "bushcrafting" point of view to carry over to a folding knife if you want to go that route.
1) Thick, hand filling grip to give good control when making shavings
2) Palm width blade (about 3.5 to 4")
3) No sharpening choil to allow full use of the blade while making precise cuts with wood
4) Handle that allows for multiple grips including choking up on the blade
Of the knives you listed, the Buck 110 ticks all of those boxes. If you want to save some $s and ounces and are willing to accept a bit less durability, you can get the plastic framed LT version at *Mart for under $20. The 110 is a hunting knive first and foremost. In particular, it's easy to overstress the delicate tip compared to even the Companion. But the wide handle and lack of choil make it pleasant for long wood working sessions. The 112 is pretty, but the handle shape interferes with some hand positions and the blade length can be limiting.
Another inexpensive knife you might consider is the Opinel #9 or #10. They require some work to waterproof them (heat wax into the pivot with a heat gun) but they are very light and more durable than the 110 under hard use. I have no hesitation batonning the #10 though any wood the blade will span (so long as the lock ring is left disengaged).