NPCs composing that spawngroup :

fire_goblin_shaman (33%)

inferno_goblin (33%)

Solusek_mage (34%)

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

soldunga_27, range=27 (-1013,-667,41)

soldunga_25, range=78 (-985,-565,39)

soldunga_24, range=33 (-983,-614,47)

inferno_goblin (50%)
Solusek_priest (50%)

soldunga_23, range=64 (-938,-628,47)

soldunga_22, range=34 (-993,-608,47)

soldunga_1, range=16 (-1002,-658,41)

Lynada_the_exiled (100%)