Yes - there were plans (hybrid ships) in USRR (Gibs&Cocks) and Japan(G7-?) as I remember.
Also there is theory- just the theory that there were one U-boot XI "Die Schwarz Ritter" - I would say "private ship"(owned by organisation sofindus) sunk by K25.
About Carrier B as Tiornu said- it was another "Graf" type.
Also projected rebuilt passangers: Europa, Potsdam, Gneisenau(Japanes rebuilt finally Scharnorst-as "Shinyo") and captured Fr. light cruiser "De grasse" (which was in built) - but never started.
About Light cruiser, I have infos that M-R ships were new project (not Leipzig, for example heavier than Leipzig), and nwe type (1941 ordered) - 3 ships
captured43(all ex IT)
"Mowe": Albatros, Falke, Greif, Kondor, Mowe, Seeadler, Tiger (sunk in 1931),
II: (1928-29) Iltis, Jaguar, Leopard, Luchs, Wolf
Captured:4 norwegian (lepopard, Lowe, Panther, Tiger)
Captured 1943, ex IT: TA9-TA13, TA16-TA18, TA20-22, TA24, TA27-30, TA35-42. TA45, TA48 and49
"G7": T107-108, T110-111
"F" : F1-F10
Artillerieschulschiffe (school Artillery ships)
And later captured ships:
Ex IT Gabbiano: UJ201-202, UJ205, UJ208, UJ2221-2223, UJ2226-2228, UJ6081-6085
K1-4(diffrent ships, hol)
KUJ1-16, KUJ21-23, KUJ25, and never built KUJ17-18, KUJ26-42
captured difrrent: ex ITU J2101, UJ2103,UJ2106,UJ2109,
ex GB UJ2110,
ex Fr SG26, UJ6060, SG27
"M old": M61,M72,M75, M84-85, M89, M98, M102, M104, M110-111, M117, M122, M132 M145, M157 (they all later change numbers (M71toM572, M98 to M598, M145 to M545.....)
Acheron, Alders, Arkona, Brommy, Delphin, Fuchs, Gazelle, Havel, Hille, Jagd, Jungingen, Nautilus, Nettelbeck, Otto Braun, Pelikan, Raule, Stortebeker, Sundewall, Von der Groeben, Von der lippe
"M new":M1-M39, M81-85, M101-104, M131-133, M151-156, M201-206, M251-256, M261-267, M271-279, M291-294, M301-307, M321-330, M341-348, M361-377, M381-389, M401-408, M411-416, M421-428, M431-438, M441-446, M451-456, M459-471, M475-576, M483-384, M486,M489,M495-496
missing numbers projected, never built,
missing numbers never built (up to M1050)
soo. now we can talk