I have never taken anything on Bushcraft, so I may not be a good source of info.
Length - 4"-4.5"
Thickness - 1/8" - 5/32"
Handle - Traditionally wood, though G-10 or Micarta could work. Also a hidden tang so there is no exposed metal.
Steel - Usually Carbon because of ease of sharpening and to throw sparks.
Grind - Scandi grind
Sheath - Leather or Kydex with a slot for a Fire Steel.
The knife shown in the original post is pretty much the standard of the design.
Forgot to add, most have minimal integral guards. I am not real fond of that as I prefer the added safety. Not saying some huge metal guard. I prefer a integral guard and a nice finger cut out.
"A Delica is still a better weapon than a keyboard and a sour attitude..." Michael Janich