Luzon Kris, just like Robert's

[kai]

This is exciting to me as either the pieces were made by the same smith and/or this style of sword could have been a standard pattern issued to some local Philippine militia.

While it's not possible to prove a negative, I really don't think these 2 options are the only possible scenarios and I'd posit these 2 are not even the most likely ones: In many cultures, styles and patterns are fairly conserved over time and space (aka tradition). Thus, one tends to see patterns which are closely adhered to over generations and sometimes neighbouring areas. This doesn't have to be a sign of a single craftsman nor a "single school" (nor any militia pattern).

Apologies for the rant - I keep hearing such assumptions but hardly ever see any evidence like specific tool marks, brush strokes (paintings) or other stylistic features of the actual work by artisans.

Regards,
Kai