NPCs composing that spawngroup :

a_grimling_herder (50%)

a_grimling_lookout (50%)

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

HollowshGremlin1328067, range=22 (-1445,-762,-117)

HollowshOwls2428067, range=22 (-1445,-762,-117)

HollowshOwls2428104, range=0 (-1443,-740,-102)

an_owlbear_ravager (50%)
an_owlbear_ravager (50%)

HollowshWolves1328067, range=22 (-1445,-762,-117)

HollowshWolves1328104, range=0 (-1443,-740,-102)

a_sonic_ravager (50%)
a_sonic_stalker (50%)