NPCs composing that spawngroup :

an_elite_goblin_guard (67%)

a_goblin_priest (33%)

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

permafrost_1, range=36 (189,-466,3)

an_ice_goblin (100%)

permafrost_9, range=90 (199,-588,3)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_12, range=89 (176,-589,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)

permafrost_13, range=89 (187,-589,3)

a_goblin_priest (50%)
a_goblin_scryer (50%)

permafrost_14, range=45 (169,-545,3)

permafrost_19, range=68 (205,-437,3)

permafrost_61, range=55 (228,-478,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_70, range=91 (267,-481,3)

a_goblin_prelate (50%)
a_goblin_priest (50%)

permafrost_80, range=22 (199,-498,3)

an_ice_goblin (50%)
a_goblin_prelate (50%)