@The Reformer Thanks for adding your personal insights!
I have a feeling you’re into the right idea about finding individuals who have become masters (or at least highly experienced!)
It’s quite interesting that Karate is more widespread. Whilst I’m aware it has both a Chinese/Japanese influence in it’s origins, I had conceived the idea in my mind that there had to be even a handful of schoools teaching a more distinctly Chinese style (i.e. Wing Chun) as a way of maintaining connection - given the huge Chinese-Jamaican presence.
I’ve seen quite a bit about the Chinese Jamaican population though, so I’m not completely surprised to think perhaps it’s just that - a thing of my mind!
Wishing you success in finding your preferred school also. 
Thanks again,
-W