For now, I figured an abbreviations page in my Notebook will do :P Thanks for helping complete the list.
Code:
CRAGLORN:
AA Atherial Archive
SO Sanctum Ophidia
HRC Hel Ra Citadel
DsA Dragonstar Arena
DLCs:
AS Asylum Sanctorium - Clockwork City
CR Cloudrest - Summerset
MoL Maw of Lorkage - Thieves Guild
HoF Halls of Fabrication - Morrowind
SS Sunspire - Northern Elsweyrm
MA Maelstrom Arena - Orsinium
RoM Ruins of Mazzatun - Shadow of the Hist
CoS Cradle of Shadows - ↑
ICP Imperial City Prison - ↓
WGT White Gold Tower - Imperial City