g.o.d is called the nations idol group in South Korea but many international fans don't even know them since they are an older group and do not promote outside of Korea.
For example an article 2018 referring to g.o.d's tour name "greatest" the Kukmin Ilbo noted that the concerts were appropriately named as g.o.d was one of the few K-pop groups who could put together a full set list consisting exclusively of number 1 songs.
Source:
news.kmib.co.kr
g.o.d also sells out venues in Korea even in 2019 such as the KSPO Dome, which is notable for a group that debuted in 1999.
For example an article 2018 referring to g.o.d's tour name "greatest" the Kukmin Ilbo noted that the concerts were appropriately named as g.o.d was one of the few K-pop groups who could put together a full set list consisting exclusively of number 1 songs.
Source:

국민그룹 god의 위대한 20년, 다섯이 함께 걸어나갈 길 [리뷰]
막이 걷히고, 익숙한 전주가 흘렀다. “내가 가는 이 길이/ 어디로 가는지/ 어디로 날 데려가는지/ 그곳은 어딘지/ 알 수 없지만….” 4집 타이틀곡 ‘길’이다

g.o.d also sells out venues in Korea even in 2019 such as the KSPO Dome, which is notable for a group that debuted in 1999.