Someone just made me aware of these:
I only have filenames so i cant confirm they actually exist, but if they do then presumedly both 16/32gb versions exist along with D820/D821 versions.
Formally the D820/D821 are the same device as far as roms go, since the otas to KRT16M are the same for either model.
The filenames make it easy to fill in the blanks if there are others that exist though.
XDA Wiki Moderator
Nexus 4: Stock 4.4.4 (KTU84P) 2013 N7: Stock 4.4.4 (KTU84P)
iTouch 5G: 6.1.2 (10B146) Surface Pro 2: Win8.1u1 (6.3.9600.17085.amd64fre.winblue_gdr.140330-1035)