I found this article by Dave Harrington. While not current it's pretty informative.
https://www.bestbeginnermotorcycles.com/usa-state-of-scootering-in-2021/
Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.