Don't know if this will count but here goes...
If analog sound means to you a full rich and natural blend of space and instruments & vocalizations, I understand your concerns on attaining good sounding RB CDs
as they usually are quite the opposite. Often being bass heavy or simply bright and thin sounding. The bright ones I dont play on my main system
the bass heavy ones? Well, I guess thats part and parcel what generally comes with RB.
I tend to avoid many of the remastered 50s and 60s artists, but even there I own a good bit of them. Recent remasters of older performers I like which sound good too are some from artists such as Solomon Burke, E. C. Scott, Stephanie Mills, irma Thomas, Esther Phillips, otis Clay, Illinois Jacquette, etc.
Newer issues & artists like some from Boz Scaggs, (Come on Home) Babyface, Quincy Jones, (Qs Jook Joint) Avant, Queen Latifa (The Dana Owens Album), Gladys Knight, (Before Me) Delbert McClinton, (Nothing Personal & Room to breathe) Paul Thorn, (Aint love strange & Are you with me) John Mayalls Along for the Ride is pretty good too. Memphis Horns, and some still more blues oriented artists that usually carry the R&B theme into most if not all of their albums while sounding good too, are Clarence Gatemouth Brown, W. C. Clark, Joe Cruz, Dan Penns Do right Man, (he wrote songs Motown hit the charts hard with for Aretha, Box tops, Burke, Thomas etc), even the recent album confilgration by Dan Akroyd and others, Have Love Will Travel, has some great cuts on it
Time wont let me
Polk Salad Annie.. Driving Wheel.. etc. and Marcia Balls Presumed Innocent is very good too.