NPCs composing that spawngroup :

an_owlbear_ravager (100%)

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

hollowshade_a_grimling_thief102, range=0 (-1940,-1042,-103)

a_grimling_thief (100%)

hollowshade_a_grimling_overseer105, range=71 (-2009,-1024,-104)

a_grimling_overseer (100%)

hollowshade_a_grimling_mystic99, range=64 (-1978,-990,-114)

hollowshade_a_grimling_recruit101, range=21 (-1931,-1022,-115)

a_grimling_recruit (100%)

hollowshade_224230, range=61 (-1996,-1016,-112)

hollowshade_224232, range=21 (-1931,-1022,-115)

an_owlbear_ravager (100%)

hollowshade_224237, range=21 (-1931,-1022,-114)

a_sonic_hunter (100%)

hollowshade_224240, range=71 (-2009,-1024,-103)

a_sonic_hunter (100%)

hollowshade_224245, range=0 (-1940,-1042,-102)

a_sonic_tracker (100%)

hollowshade_224246, range=84 (-1931,-958,-101)