NPCs composing that spawngroup :

#a_grimling_warblood (11%)

#a_grimling_warmaster (11%)

a_grimling_bloodreaver (11%)

a_grimling_bloodreaver (11%)

a_grimling_bloodreaver (11%)

a_grimling_fleshsoother (11%)

a_grimling_fleshsoother (11%)

a_grimling_fleshsoother (12%)

a_grimling_veteran (11%)

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

grimling1336141, range=53 (137,1284,88)

#a_grimling_warblood (50%)
a_grimling_bloodreaver (50%)

grimling1336014, range=22 (182,1306,-111)

grimling1336013, range=83 (181,1368,-111)

a_grimling_guard (50%)
a_grimling_guard (50%)

grimling1336012, range=89 (275,1317,-99)

a_grimling_miner_1433341, range=48 (227,1318,-102)

a_grimling_miner (2%)