Valyn showed amazing IGL skills with the Guard and G2 this year.
Kingg had the best individual performance and has been the best player on his team since 2022 by stats (excluding Aspas last season).
KiNgg is better in a scrappy environment but Valyn is better if you want discipline and morale. I think most teams would pick Valyn if they needed an IGL and KiNgg for a fragging flex.