Complex sentence: Kashi Mutt (or Kashi Math) is one of the four Mutts which Goud Saraswat Brahmins follow, the others being Gokarna Mutt (Vaishnava), Kavle Mutt (Smarta) and Chitrapur Math (Smarta).
Split into simpler sentences: Kashi Mutt (or Kashi Math) is one of the four spiritual schools followed by the Goud Saraswat Brahmins. Other Mutts being Gokarna Mutt (Vaishnava), Kavle Mutt (Smarta) and Chitrapur Math (Smarta).