Hullo everybody,
Harley, your blades that I have seen seem to come from the Cirebon/Tegal area. If all of them are similar, you must have had a field day buying them up.
BTW ..... if they are indeed from this area, then I would call them 'Sunda', especially if they are longer than 'normal' (i.e. more akin to the larger Balinese blades). The Sunda traditionally prefer their blades to be 'dry' looking. Hence they don't stain them.
Blades tend to be simple and not 'proud'/intimidating.
WRT to dapur, that's more difficult.
Cirebon has had the longest exposure to Jawa influence. So the blades tend to follow the prevailing pakem Jawa. Though there are still those who adhere to the old pakem. However, I have noticed blades which seem to be some form of 'marriage' between the two. Confusion? Or merely commercial opportunism?
Best,