The first time I took it, it said my three most similar were: Worcester, Boston, and Springfield.
My three least similar: New Orleans, Detroit and Toledo. (insert giggling here)
I took it today and my three most similar are Worcester, Springfield and Rochester NY
My least similar were: Houston, Jackson MS, and New Orleans
At least I’m consistent - I was born about an hourish from Worcester / Springfield and I guess that does inform a lot of my speech.