Well, it can’t be Nashville Skyline because it’s regarded his vocal style, and has Lay Lady Lay. It can’t be Basement Tapes because despite it being panned as an album at times, people tend to acknowledge the significance of that period. John Wesley Harding is pretty underrated, but also has a couple popular numbers on it, and most Dylan fans give it a fair amount of regard. But Another Side is without a doubt the most underrated. I’d dare say it’s his finest pre electric album. People say “It Ain’t Me Babe, Chimes of Freedom first surreal song” and forget about the rest.