The piece of music from The Truman Show which is similar to Trevor Jones's work here is the Anthem from Powaqqatsi by Philip Glass. The 'Qatsi' trilogy of movies are a remarkable bit of art in themselves (they're not narrative works as such). Several pieces from Koyaanisqatsi (the first film) have become very famous and have been used in everything from Watchmen and Stranger Things.
Extra fact: Philip Glass himself is shown playing the keys in Cristof's control room in The Truman Show.