Here are some blades from Luzon:
These are from Bicol in Southern Luzon.
This is the Bicolano version of the ginunting. As you can see, it is very different in shape to the ginuntings of Negros and Panay. This is primarily an agricultural blade while those of the visayas are primarily for fighting.
There is a preference to keep "agricultural" blades unpolished to save the few microns of blade thickness that would be lost to buffing. They are also less expensive that way.
Here's a "baby" Bicolano ginunting with a shorter blade.
This one is called the "Sinampaloc". Sampaloc is the tagalog word for tamarind. It is so-named because the blade is similar in shape to a tamarind fruit. This is great for chopping coconuts.
And here's a "baby" version.
I forget the name for these blades, but they have a better pedigree than the preceding models. The brass guards, thinner polished blades, and lively balance make them more useful for martial applications.
The tangs on most Luzon blades go all the way through the handle, and are peened over a washer at the pommel. That gives a more solid attachment than Visayan products where the tang only goes part way into to handle and is held in place by friction and glue.