Agreed Sejeong probably has the closest profile - acting, singing and variety.
Though her acting has taken off more than her singing.
And different from IU's lyricism, is Sejeong's variety skills - comic, athleticism.
But one major factor missing is that IU ascended the throne when she was just 17 and has not at all descended in the last 12 years.
Sejeong is already too late for that kind of success.
In fact it is that she factor, that makes any discussion of IU pointless, she easily can do at least another 5 years at the top as a singer, even longer as an actress, given them K-dramas are still after Son Ye Jin, Song Hye Kyo or Jung Jihyun.
So this is better asked in another 5 years.
