Pretty much any vintage razor in good condition will make a nice shaving razor. Lots of brands of modern razors aren't suitable for shaving, they're just display pieces.
As I understand it, the prevalence of razor manufacturers in New York state is due to European immigrants bringing their craft with them to the US.
When looking at vintage blades, I look more for condition and price than maker. Lack of hone wear, lack of rust or tarnish and a nice size blade with no chips are what I look for.
That's what I like most about this hobby, the fact that every junk shop has a box full of razors for sale. Most, however have excessive hone wear or are cracked and broken. Every once in a while, you find that perfect beautiful blade, though.
That's what keeps you going.