NPCs composing that spawngroup :

spectral_caller (100%)

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

karnor_1, range=168 (125,-351,3)

karnor_6, range=138 (116,-315,3)

karnor_7, range=124 (73,-257,3)

karnor_9, range=154 (75,-305,3)

karnor_11, range=114 (88,-261,5)

spectral_curate (100%)

karnor_12, range=158 (27,-238,3)

karnor_13, range=173 (12,-238,3)

karnor_15, range=71 (133,-247,45)

skeletal_guardian (95%)
skeletal_warlord (5%)

karnor_17, range=160 (41,-108,6)

a_drolvarg_guardian (50%)
a_drolvarg_sentry (50%)

karnor_19, range=196 (1,-107,6)

a_drolvarg_guardian (50%)
a_drolvarg_guardian (50%)

karnor_46, range=185 (-7,-197,45)

karnor_49, range=43 (175,-148,-12)

a_drolvarg_sentry (50%)
spectral_caller (50%)

karnor_53, range=186 (67,-42,36)

a_drolvarg_captain (5%)
a_drolvarg_guardian (95%)

karnor_72, range=87 (145,-110,34)

karnor_117, range=193 (174,-385,48)

spectral_caller (50%)
spectral_caller (50%)

karnor_118, range=189 (205,-379,45)

karnor_121, range=26 (191,-215,45)