Although we know that there are 108 Upanishads, only 12 are popular in discourse and it is said that most of the original copies of Upanishads were lost or stolen from Hindu mutts by the Western Indologists. What are the names of the 108 Upanishads? Is the list given in this accurate? Also a 1 line description of what each of these Upanishads deal will be of great help.
P.S. It is said that the most authentic record of the Upanishads available is Darah Shikoh's translation of around 50 Upanishads. Is there a book that is a compilation of Shikoh's and all the available (Indian) translation of upanishads?