At the end of Words of Radiance, we learn that the oathgate in alethkar is
Furthermore, I believe that we have already seen the central "control room" of this fabrial in the book, more specifically the Circle of Memories that can be seen in the final interludes as part of the first perspective, Lhan, this room is described as:
To me, this seems incredibly similar to what is found at Stormseat
I believe that these two buildings are both oathgates, they both have atleast ten lamps on the wall, with the previous extract showing that this refers to stormlight based lamps. Furthermore both chambers are split into eleven, in kholinar the eleventh is believed to be the tranquille halls, in stormseat utithuru. However, the eleventh lamp in kholinar is a bit of an anomaly, I believe this could be simple ornamentation from the Alethi, or perhaps it has been added to oathgate as a means to lock it, as we know that all oathgates besides stormseat have been locked.
Anyway, there is my theory, please tell me what you think