The Isley Brothers 2 CD Anthology has a couple of very interesting stereo mixes of This Old Heart Of Mine and There's No Love Left. They both have the "sound" of the mono mixes in that the volume level of instruments are the same as the mono mixes. As far as I know, this is quite unlike other stereo mixes of other artists' songs.

Is this approach unique to this album release of did Motown create "mono sounding" stereo mixes for other artists?