NPCs composing that spawngroup :

a_sonic_ravager (50%)

a_sonic_stalker (50%)

NPCs spawning around that spawngroup :
(Max range : 200)

HollowshGremlin1328122, range=0 (-1393,-1257,-126)

a_grimling_fisherman (50%)
a_grimling_herder (50%)

HollowshGremlin1328105, range=137 (-1522,-1209,-100)

a_grimling_lookout (50%)
a_grimling_overseer (50%)

HollowshGremlin1328066, range=186 (-1562,-1336,-129)

HollowshGremlin1328064, range=105 (-1401,-1152,-109)

HollowshGremlin1328063, range=176 (-1568,-1236,-106)

HollowshOwls2428063, range=176 (-1568,-1236,-106)

HollowshOwls2428064, range=105 (-1401,-1152,-109)

HollowshOwls2428066, range=186 (-1562,-1336,-129)

HollowshOwls2428105, range=137 (-1522,-1209,-100)

an_owlbear_fleshrender (50%)
an_owlbear_ravager (50%)

HollowshOwls2428122, range=0 (-1393,-1257,-126)

an_owlbear_gatherer (100%)

HollowshWolves1328063, range=176 (-1568,-1236,-106)

HollowshWolves1328064, range=105 (-1401,-1152,-109)

HollowshWolves1328066, range=186 (-1562,-1336,-129)

HollowshWolves1328105, range=137 (-1522,-1209,-100)

a_sonic_ravager (50%)
a_sonic_warwolf (50%)