NPCs composing that spawngroup :

a_grimling_miner (2%)

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

grimling1336225, range=8 (-80,1513,-150)

grimling1336181, range=89 (-5,1549,-150)

grimling1336180, range=30 (-91,1545,-150)

a_grimling_elder_guard (100%)

grimling1336162, range=35 (-121,1528,-150)

grimling1336159, range=82 (-95,1433,-150)

a_grimling_sorceress_1433331, range=99 (-130,1425,-148)

a_grimling_sorceress (2%)
Sorceress_Gnildaria (2%)

a_grimling_miner_1433332, range=85 (-119,1595,-148)

a_grimling_miner (2%)

a_grimling_miner_1433333, range=52 (-108,1466,-148)

a_grimling_miner (2%)

a_grimling_miner_1433334, range=56 (-94,1571,-150)

a_grimling_miner (2%)

grimling_113149, range=90 (-118,1430,-150)

Spiritmaster_Ugreth (100%)