I would characterize the mix as ambient in the rear channels and there is nothing discrete in the center channel that I noticed. It is a typical classical multichannel mix.
Thank you, and to everyone who's contributed thusfar - I've deleted all the ones provided in the thread so far from the list in post #1, so what you see remaining is what I still need:
Silverline
The London Philharmonic Orchestra 'Classical Masters Series: Grieg' 86029-9
The London Philharmonic Orchestra 'Classical Masters Series: Mendelssohn' 86030-9
Don Jackson / The London Philharmonic Orchestra 'Tchaikovsky: Swan Lake' 86032-9
Various Artists 'Inside the Music: Classic Country' 86037-9
The London Symphony Orchestra 'Classic Christmas' 288045-9 (DVD-A) / 284021-2 (DualDisc)
Fireside 'Uomini D'onore' 288047-9
Mineral 'The Power Of Failing' 288048-9
Bobby Womack 'Soul Sensation Live' 288066-9
Ken Boothe 'Crying Over You: Anthology' 288077-9
The Dubliners The Definitive Transatlantic Collection 288078-9
Various Artists 'Ruder Than You: The Best of British Ska' 288091-9
Richard Friedman 'Sounds of the Season - Out West' 288102-9
Richard Friedman 'Sounds of the Season - Island Rhythms' 288103-9
Richard Friedman 'Sounds of the Season - Smooth Jazz' 288104-9
Richard Friedman 'Sounds of the Season - Piano Solos' 288105-9
Richard Friedman 'Sounds of the Season - Urban Grooves' 288106-9
38 Special 'A Wild-Eyed Christmas Night' 288107-9
Various Artists 'Reggae Christmas II' 288110-9
André Gagnon 'Noël' 288111-9
Various Artists 'Reggae Pulse: The Heartbeat of Jamaica' 288123-9 (DVD-A) / 284516-2 (DualDisc)
Dizzie Gillespie 'Matrix: The Perception Sessions' 288129-9
T-Bone Walker 'Back On The Scene' 288135-9
Canned Heat 'From the Front Row... Live!' 288160-9
Greg Lake 'From the Front Row... Live!' 288162-9
Kingfish 'From the Front Row... Live!' 288166-9
Jerry Lee Lewis 'From the Front Row... Live!' 288170-9
Robert Gordon 'From the Front Row... Live!' 288192-9
Stiff Little Fingers 'From the Front Row... Live!' 288193-9
April Wine 'From the Front Row... Live!' 288194-9
Maurice Abravanel / Utah Symphony Orchestra Williams: Symphony No.6 in E minor 288239-9 (DVD-A) / 284206-2 (DualDisc)
Maurice Abravanel / Utah Symphony Orchestra 'Rachmaninov: Symphony No. 3' 288242-9 (DVD-A) / 284212-2 (DualDisc)
Adrian Boult / The Philharmonic Promenade Orchestra Of London 'Beethoven: Symphony No. 5 in C Minor, Op. 67 / Leonore Overture No. 3 in C Major, Op. 72b' 288253-9 (DVD-A) / 284219-2 (DualDisc)
Adrian Boult / The Philharmonic Promenade Orchestra Of London 'Beethoven: Symphony No.3 in E Flat Major Op.55, "Eroica" & Coriolan Overture, Op.62' 288254-9 (DVD-A) / 284220-2 (DualDisc)
Maurice Abravanel / Utah Symphony Orchestra 'Tchaikovsky: The Nutcracker' 284214-2 (DualDisc)
Anthony Bernard / London Chamber Orchestra 'Handel: Water Music & Music for Royal Fireworks' 284217-2 (DualDisc)
Various Artists 'Reggae Masters Vol.1' (DVD-V) 284521-2 (DualDisc)
Various Artists 'Classic Rock Masters Vol. 1' (DVD-V) 284522-2 (DualDisc)
Various Artists 'Classic Rock Masters - Current Music' (DVD-V) 284523-2 (DualDisc)
Various Artists 'Blues Masters' (DVD-V) 284526-2 (DualDisc)
Various Artists 'Heavy Metal Masters' (DVD-V) 284528-2 (DualDisc)
Various Artists 'Live Rock Masters' (DVD-V) 284533-2 (DualDisc)
Various Artists 'British Invasion Masters' (DVD-V) 284535-2 (DualDisc)
Bob Marley 'Reggae Master' (DVD-V) 284538-2 (DualDisc)
Queensrÿche / Geoff Tate 'Face to Face' (DVD-V) 284540-2 (DualDisc)
Various Artists 'Classic Rock Masters Vol. 2' (DVD-V) 284545-2 (DualDisc)
Various Artists 'Reggae Masters Vol. 2' (DVD-V) 284548-2 (DualDisc)
Immergent
Dishwalla 'Live… Greetings From the Flow State' 284117-2 (DualDisc)
Various Artists 'South Beach Sounds - Miami Music Week Vol. 1' (DVD-V) 284125-2 (DualDisc)