Hwa Ryun has hack abilities by seeing some paths ahead. AA Khun is probably the last in this list, as much as he is great and my bias, it's hard to compare with Maschenny who has more power in her disposal than him and she is of high position so she can use that to her advantage. Yu Hansung is third I think, I think he was working with Headon. Ofc that doesn't take away his merit, he is considered a genius even if he's not from the great families.