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Saber grind is #3 and full height grind is #2.

The bevel for a saber grind knife starts around the middle and tapers down to the edge, giving it a more obtuse angle.

Full Height grind tapers from the spine down to the edge.

There's both advantages and disadvantages for both grinds. Saber grinds are generally heavier due to have more steel in the middle, therefore it is tougher; and full height grinds are lighter and cut better due to the more acute angle.

For me, I don't mind the extra weight of saber grind and the extra bit of toughness, plus it's a better base if I ever plan to fully convex it, #6.

Not to be a critical or technical but 3 is actually a scandi grind because it is a dual single bevel or simply a simple bevel but not to be confused with 4 which is a single bevel (meaning only one grind on one side) chisel grind.

Number 5 is the saber and most grind these days include a second bevel which is very different from a scandi. Also, I think Pink did state that the saber grinds can vary from knife type to knife type. 3/4, 7/8, 1/2, etc., etc..

JYD #54 "Put your hands high, let your arms be the pillars that be holding up the sky..."