NPCs composing that spawngroup :

greater_skeleton (90%)

undead_crusader (10%)

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

kurn_1, range=78 (-121,-186,6)

greater_skeleton (100%)

kurn_3, range=94 (-73,-311,-23)

kurn_7, range=53 (-90,-254,3)

kurn_8, range=87 (-119,-272,4)

kurn_27, range=99 (-149,-208,-23)

kurn_29, range=16 (-65,-212,3)

kurn_42, range=68 (1,-174,-109)

kurn_70, range=67 (-72,-155,-105)

kurn_73, range=59 (-108,-233,-23)

kurn_80, range=24 (-72,-208,-23)

kurn_82, range=57 (-41,-276,-23)

kurn_83, range=91 (-58,-310,-23)

kurn_113, range=38 (-87,-231,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_130, range=94 (-143,-238,-23)

kurn_131, range=75 (-108,-268,-23)

kurn_138, range=9 (-50,-210,-23)

kurn_139, range=43 (-41,-176,-23)

kurn_140, range=68 (-56,-151,-23)

Burynai_burrower (100%)

kurn_142, range=31 (-20,-208,-23)

Burynai_burrower (50%)
greater_scalebone (50%)

kurn_143, range=47 (-27,-177,-23)

kurn_157, range=86 (11,-157,-109)

kurn_161, range=50 (0,-221,90)

greater_scalebone (90%)
undead_crusader (10%)

kurn_162, range=98 (-48,-121,132)

kurn_163, range=40 (-10,-218,132)

kurn_164, range=35 (-83,-232,123)

kurn_165, range=84 (34,-219,132)

kurn_166, range=93 (23,-161,132)

kurn_168, range=77 (0,-160,132)

kurn_169, range=71 (0,-270,132)

kurn_171, range=38 (-83,-200,123)

kurn_172, range=71 (-89,-159,88)

kurn_173, range=18 (-55,-201,88)

kurn_181, range=61 (-71,-277,4)

kurn_276926, range=22 (-28,-218,134)

greater_scalebone (90%)
undead_crusader (10%)