Are there any Martial Arts that focus primarily on pressure points?

The reason why its only a portion of most styles. Is because a style should be balanced. If you rely too much on one aspect, you develop gaps and predictability as well as the flaws in your fighting. Eventually it will fail you.
A style needs to be balanced not dependent upon one small aspect.

I teach pressure points, but I look at it as more of a bounce. Pressure points don't always work a 100% of the time, nothing ever does. So when it works great, if it doesn't then you better have something else in your bag to back it up with.

Kokoro is right. Nothing should ever be just striking or just grappling or just pressure points. A well taught traditional style should cover a variety of things.
However, you might want to look at teachers and see if you can find someone who emphasizes pressure points a little more. But this would not be style dependent but a personal preference of the practitioner.
Another option would be to learn acupressure. What can heal can also hurt if you understand how.
BTW it's called a Kubotan. The Kubotan (sometimes erroneously spelled as Kubaton or Kobutan) is a trademark for a self-defense keychain weapon developed by Takayuki Kubota in the 1960s.

Yes.. dim mak and kalari payattu.

Why are you so interested in this?

Ok Mason your Urban Goju Karate is a offshoot of Goju Ryu Karate. I did a little quick research. Easy to find out now these days. So it is not truly a separate style. So don't be fooled so easily.

Peter George Urban (August 14, 1934 – April 7, 2004) was an American martial artist. He was the founder of the Karate style American Gōjū-ryū. Urban was one of only a small number of white students under Gōgen Yamaguchi, an early Gōjū-ryū instructor. Controversially, he created an American version of Gōjū-ryū without the permission of Yamaguchi.

Oh yeah did I mention I did a little quick research.

yes