>Guilliman: a great statesman and logistics genius
>Vulcan: a perpetual, a great smith
>Ferrus Manus: a great smith and engineer
>Lion: a primarch
>Khan: a primarch
>Dorn: master of fortifications
>Sanguinius: a primarch
>Corax: master of stealth
>Horus: greatest primarch
>Lorgar: a primarch
>Curze: a primarch
>Perturabo: master of seiges
>Alpharius: master of secrecy
>Angron: a primarch
>Magnus: master sorcerer
>Mortsrion: a primarch
>Fulgrim: a primarch
Half of them have no special distinguishing abilities aside from being demigods of war, or having wings/being crazy/not giving a fuck, which are traits of character not of a leader of an unstoppable army of super soldiers.