Waco, the Hare Krishnas, and Heaven’s Gate have pretty much defined what a “cult” looks like in the public eye. Polite, well-dressed door-knockers get an easy pass.
Up till now, anyway.
I prefer the term “authoritarian high-control group”.
It’s a bit wordy, but IMO, break it down into its component parts and I think even the most die-hard JW loyalist would have trouble refuting the label.
I could be wrong.