Sixteen of the 56 rated cat breeds sit at the top of the vocalisation scale. Read the list and a pattern appears immediately: the Siamese, Colorpoint Shorthair, Javanese, Tonkinese, snowshoe and Burmese are all Siamese-derived. The loudest group in the catalogue is largely one lineage wearing different coats.
The rest of the list
Outside that family sit the Sphynx, Bombay, Japanese Bobtail, Turkish Van and Khao Manee. Several of those are Southeast Asian in origin too, which makes the geographic clustering nearly as tight as the genetic one.
What a top rating here actually claims
That the breed is known for talking, not that it is noisy in the way a dog is noisy. The Siamese voice is the specific thing being described — insistent, conversational, aimed at a person. A rating cannot convey that, which is why the number is a starting point and the breed page is where the description lives.
Choosing against it
If a talking cat is the thing you cannot live with, the opposite end of this scale is unusually well populated: 24 breeds carry the quietest rating, against 16 here. On this one trait the catalogue gives you a real choice, which is more than most of its columns manage. Everything is on the breeds page with the source it came from.
Which cat breed is the most vocal?
Sixteen breeds share the top rating rather than one holding it, and most of them are Siamese-derived: the Siamese itself, the Colorpoint Shorthair, Javanese, Tonkinese, Snowshoe and Burmese.
Why are Siamese cats so talkative?
This catalogue can show that the Siamese and its descendants cluster at the top of the vocalisation scale. Why the lineage carries that trait is a question for breeders and geneticists, not for a register.
Are there quiet alternatives that look similar?
The ratings do not connect appearance to voice, so the honest answer is to compare the breeds themselves. Twenty-four breeds carry the quietest rating and the breeds page lists them.