Hi WW,
Nice collection of Filipino knives.
The top one, as you say, is a
plamingko from the Visayas.
The middle one is from Luzon, and that distinctive scabbard comes from a specific location which I am struggling to recall. Xasterix may be able to help. The blade shape resembles a
katana from Central Luzon.
The last one, which you didn't describe, is a recognized pattern from the town of Apalit in the Central Luzon province of Pampanga. It's name has not been determined here,
but several examples have been discussed on the Forum.