There is a CD packaging type similar to Jewel Case, with paper inlay shapes slightly different but enough for Jewel Backs not to fit. It is currently not listed at MB, nor under https://en.wikipedia.org/wiki/Optical_disc_packaging and I have not found an official name. Before posting a ticket on adding this, maybe someone has suggestions on what to call it, a generalized name rather than branded.
I have come across this packaging in releases by 1 label only (PILZ; releases entered as ‘Jewel Case’ or ‘Other’), having 1 physical release at hand only (Tschaikowsky: Symphonie Nr. 5), and that one has that label’s logo (albeit slightly modified: an added superscript dot maybe approximating ® due to coarse-grained plastic) on the Tray part, of which I have seen no other discernible photos. Label is a budget, even ‘Alfred Scholz’ one, but facts given, the packaging type should be added; and for want of a better name, I propose ‘Pilzpak’.
A generalized name would be preferred, but I cannot think of anything better fitting into the list of existing others, also believe the relevant patents, under label name, are
At least that schematic matches this description (short version at bottom):
Note logo in Tray right corners:
Outer dimensions are identical to Jewel. Medium and Booklet also have standard dimensions, but Back—Spine differs from Jewel: With Back laid out as this:
there are characteristic cutaways to the right (giving room for the “3-layer hinge” (Back pin through both Tray and Front, thus very easily broken)) going over the hinge-side Spine which is slightly narrower than Spine on other side (because Tray spine is thicker than standard).
Below with Jewel Case white on top for comparison, Spine:
Hinge is not centered (in Spine width), so whereas a Jewel Case will open 180° and lay flat, this design opens >180° to have both Front and Back resting at the surface:
Tray is double-sided (2CD capable) used also for 1CD releases.
Some 2CD releases, and an occasional 1CD (Mozart: Quartetti per Archi Vol. 1), have the package assembled back-to-front: cutaways on Front (then left) and not Back, i.e. ‘left-handed’ for Jewel minds (see Mozart: Symphony no. 35 »Haffner« / no. 38 »Prague« / Salzburg Symphonies \CA).
Jewel case outer dimensions
2CD design (~ Smart Tray hinge orientation) used for both 1CD and 2CD releases
Sometimes assembled back-to-front
Booklet inlay matches Jewel Case, Back (in back-to-front cases: Front) does not
PILZ label own patent, so probably not used by others
Good to go?