Who is the largest shareholder of BIGBANG's success?

1) GD, the icon of BIGBANG and the idol of idols
2) Mr. Yang, the founder of YG
3) Teddy, the GOAT of idol songwriting
4) Yong-hyung, who reportedly created 80% of BIGBANG's early hits (Lies - Last Farewell - Haru Haru)