NPCs composing that spawngroup :

an_owlbear_bonegrinder (25%)

an_owlbear_fleshrender (25%)

an_owlbear_grappler (25%)

an_owlbear_ravager (25%)

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

HollowshGremlin1328240, range=0 (-1143,1058,-118)

a_grimling_lookout (100%)

HollowshGremlin1328161, range=167 (-1300,999,-109)

a_grimling_herder (50%)
a_grimling_herder (50%)

HollowshGremlin1328160, range=189 (-957,1094,-119)

HollowshGremlin1328250, range=25 (-1161,1038,-123)

HollowshOwls2428160, range=189 (-957,1094,-119)

HollowshOwls2428161, range=167 (-1300,999,-109)

a_patrolling_owlbear (50%)
a_patrolling_owlbear (50%)

HollowshOwls2428250, range=25 (-1161,1038,-123)

HollowshWolves1328160, range=189 (-957,1094,-119)

HollowshWolves1328161, range=167 (-1300,999,-109)

a_sonic_stalker (50%)
a_sonic_warwolf (50%)

HollowshWolves1328240, range=0 (-1143,1058,-118)

a_sonic_hunter (100%)

HollowshWolves1328250, range=25 (-1161,1038,-123)