[A. G. Maisey]

What is the blade grind?

Is it a chisel grind, or the usual symmetrical grind found in European blades?

The three bottom ones look like Javanese pangot, but they are too large . The long steel ferrule seems to indicate that the blade was used to exert considerable force. My guess is that they are carpenters knives that were used for a similar purpose to that for which Europeans used a draw knife, but where Europeans drew the blade to themselves, the these knives were used to push away, and possibly the wood was drawn.
If it is a chisel grind it would indicate that the intended use was to be able to remove very thin shavings, if it is not a chisel grind, the intended use would be for roughing work out.

This is all conjecture, but the form is definitely the same as the small knives used by carpenters and woodworkers in Jawa and Bali today. These modern knives would typically be about 11cm blade, and about 26cm overall.