NPCs composing that spawngroup :

myconid_priest (100%)

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

sebilis_24, range=99 (-1350,133,-176)

sebilis_28, range=75 (-1289,226,-175)

myconid_warrior (100%)

sebilis_110, range=73 (-1189,195,-175)

sebilis_111, range=83 (-1188,212,-175)

sebilis_133, range=24 (-1248,135,-109)

crypt_caretaker (50%)
dar_ghoul_knight (50%)

sebilis_183, range=96 (-1159,136,-175)

sebilis_289348, range=99 (-1350,133,-176)

sebilis_289353, range=75 (-1289,226,-175)

myconid_warrior (100%)

sebilis_289363, range=1 (-1253,159,-175)

myconid_priest (100%)

sebilis_289439, range=73 (-1189,195,-175)

sebilis_289440, range=83 (-1188,212,-175)

sebilis_289465, range=24 (-1248,135,-109)

#The_Fabled_Crypt_Caretaker (50%)
dar_ghoul_knight (50%)

sebilis_289518, range=96 (-1159,136,-175)