NPCs composing that spawngroup :

bristleweb_spider (50%)

strathbone_healer (50%)

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

kaesora_5, range=24 (145,62,-61)

kaesora_6, range=42 (147,81,-61)

kaesora_9, range=50 (175,71,-61)

kaesora_12, range=37 (120,74,-61)

briarweb_spider (50%)
ravener (50%)

kaesora_27, range=83 (54,18,3)

strathbone_healer (100%)

kaesora_28, range=90 (88,117,35)

minion_of_Xalgoz (50%)
spectral_guardian (50%)