Plymouth Bretheren. A mate of mine was brought up one. When telling his story, he uses a lot of the same cult-speak as JWs.
NZ has the Cooperites, who use it and I'm sure I have heard Brian Tamaki of Destiny church use it more than once.
I often hear 'The Truth', used the same way as JW, by members of a variety of cults in TV docos, TV evangelists and news items.
Sunday morning TV in NZ has numerous cultish gurus spouting similar cult-speak to JWs. It used to be funny hearing the same terminology and logic and even apocalyptic hoo ha, but the novelty has worn off.