Edit: and to take an example from the "official" definition: "Group 1 foods are unprocessed or minimally processed: nuts, eggs, vegetables, pasta." When people hear pasta, they think it's going to be made in a factory. I occassionally make pasta, but honestly prefer the dry stuff for its texture in most dishes, and nobody is making dried pasta at home of any good quality (see for example this amazing series of YouTube videos of an attempt at such https://www.youtube.com/playlist?list=PLURsDaOr8hWXz_CFEfPH2... )
Adding "pasta" to the group 1 list kind of upends any intuitive understanding of the groupings.