NPCs composing that spawngroup :

an_enthralled_outcast (100%)

NPCs spawning around that spawngroup :
(Max range : 100)

thedeep1312051, range=90 (-380,-348,-54)

an_enthralled_outcast (50%)
An_Enthralled_Razorfiend (50%)

thedeep1312017, range=90 (-211,-288,-60)