NPCs composing that spawngroup :

an_owlbear_ravager (100%)

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

HollowshGremlina_grimling_sold, range=0 (-2798,-634,69)

a_grimling_soldier (100%)
a_grimling_soldier (100%)

HollowshGremlina_grimling_myti, range=53 (-2848,-613,85)

a_grimling_mystic (100%)

HollowshGremlina_grimling_myst, range=45 (-2844,-626,85)

a_grimling_mystic (100%)

HollowshGremlin1328090, range=20 (-2814,-621,84)

#a_grimling_chieftain (40%)
a_grimling_spiritist (60%)

HollowshOwls2428090, range=20 (-2814,-621,84)

#an_owlbear_screechmaw (25%)
an_owlbear_bonegrinder (75%)

HollowshOwls_mystic00, range=45 (-2844,-626,85)

an_owlbear_bonegrinder (100%)

HollowshOwls_1101, range=53 (-2848,-613,85)

an_owlbear_bonegrinder (100%)

HollowshWolves1328090, range=20 (-2814,-621,84)

#Scarflank (40%)
a_sonic_warwolf (60%)

HollowshWolvesa__soldier, range=0 (-2798,-634,69)

a_sonic_guardian (100%)
a_sonic_guardian (100%)

HollowshWolvesa400, range=45 (-2844,-626,85)

a_sonic_ravager (100%)

HollowshWolvesa4401, range=53 (-2848,-613,85)