Reddit reviews Grown Up (A Revisionist History)

Instrumental Albums:

Earl Scruggs - Foggy Mountain Banjo

Bill Emerson - Home of the Red Fox

Jim Mills - Hide Head Blues

Bill Keith - Something Auld, Something Newgrass, Something Borrowed, Something Bluegrass

Jayme Stone - Room of Wonders

Non-instrumental Albums:

JD Crowe and the New South - 'Rounder 0044'

Here Today - Self Titled

Muleskinner - A Potpourri of Bluegrass

Reno and Smiley - Just get the box set

Jimmy Martin - Another box set you should get

Osborne Brothers - Country Bluegrass

Jim and Jesse - In the Tradition

Hot Rize - So Long of a Journey

Seldom Scene - Act I

John Hartford - Aereo-Plain

Newgrass Revival - Best of

Johnson Mountain Boys - At the Old Schoolhouse

Nashville Bluegrass Band - American Beauty

Bluegrass Album Band - Definitely Volumes 1-3

Boone Creek - One Way Track

Larry Sparks - Coldest Part of Winter... or get every album he's ever made

Doyle Lawson and Quicksilver - The Original Band

Lonesome River Band - Old Country Town

IIIrd Tyme Out - Back to the Mac

Chapmans - Grown Up

Blue Highway - Through the Window of a Train

Steeldrivers - Self Titled

Boxcars - Self Titled

Junior Sisk and Rambler's Choice - Heartaches and Dreams

How to Grow a Woman from the Ground - Chris Thile... or pre-Punch Brothers

Punch Brothers - Antifogmatic

Infamous Stringdusters - I like "Things that Can Fly" but "Fork in the Road" and "Silver Sky" are also very good

Deadly Gentlemen - Carry Me to Home

There's a good start. I'll try to add more as I think of them.

Grown Up (a Revisionist History) by The Chapmans. Mostly traditional bluegrass song structure and instrumentation with unbelievably clean production and performances, and the best melodic solos I've ever heard.