what are some bands like america, paul davis, the eagles?

Poco

Bread

Yes

Emerson, Lake and Palmer

The Moody Blues

Crosby, Stills, Nash and Young

Simon and Garfunkel

Bread

Badfinger

Three Dog Night

The Grass Roots

The Doobie Brothers

Harry Chapin

Procol Harum

Gordon Lightfoot

Grand Funk Railroad

Triumph

The Hollies

Foghat

Crosby, Stills, Nash & Young

Jackson Browne

The Stylistics

Survivor

Kool & The Gang

Hall & Oates

Tears For Fears

Chicago

Genesis

Duran Duran

Third Eye Blind

Bryan Adams

Phil Collins

Foreigner

38 Special

Kansas

Boston

Steve Miller Band

Bad Company

The Band

Bob Seger

Creedence Clearwater Revival

Eric Clapton/Cream

Fleetwood Mac

James Taylor

Steve Miller Band

Todd Rundgren

Don McLean

Bruce Springsteen

Neil Young

Joe Walsh

Kansas

Peter Frampton

Light, early-to-mid 70's singer/songwriter-ish pop/rock with a folk-ish, country-ish, or soul-ish tint, leaning towards harmony vocals?

Not all of these artists were especially great, but some of them were. And they all have something in common with your names, in one way or another. I limited them to early to mid 70's.

Stealer's Wheel

Linda Ronstadt

Poco

Crosby Stills & Nash

Pure Prairie League

Maria Muldaur

Firefall

Pablo Cruise

Randy Newman

Paul Simon

Doobie Brothers

Brewer & Shipley

Bread

The Outlaws

Hamilton, Joe Frank, & Reynolds

The Hollies

John Denver

Neil Young

I always spend my half an hour to read this blog's posts daily along with a mug of coffee.

The mama and the papas (one band)