Beginning of the fourth level: The Neshama’s aliya lifnei HaTzimtzum, has levels. Just as the purpose of creation does, bringing back 1) The same Ohr that filled the Chulul before Tzimtzum HaRishon 2) A Higher Ohr, Hischadshus, 3) Etzem HaOhr Ohr Chadash and 4) Yecholes, all these levels of Aliya happen in the Neshama as well.
Page 509, NEW SV p. 671-2. MP3