Nope, it's not about the name. It's about the sound and the setting. That's the best way to look at it. When you look at it like this, you also understand that different stutterers have different problems with different sounds and different settings. There are overall patterns we can point to in this, but we would not get any useful statistic out of it, in terms of coming up with a "stutter-safe sound" (it doesn't exist). So, pick a name - any name - and we're likely to find stutterers who stutter on it and stutterers who don't. Some of those stutterers will even be the same from time to time. "It varies" ought to be our motto. :)