The Cook brothers, Brad and Phil.
Phil does more touring, just released an album.
Brad does more producing now.
Old Justin Vernon bands worth checking out are the Shouting Matches and DeYarmond Edison.
Listened to a touch DE, never got into Shouting Matches.
Was at a MF show about 8 years ago and Vernon showed up in a t-shirt and beardless, so unrecognizable and the band didn't even announce him, and played some guitar in a song.
Joe their drummer was crazy good and reminded me a bit of Helm at times.
I miss those days.