Imperial Sword 09/10
Nord Hero Sword 11/9
Skyforge Sword 11/10
Elven Sword 11/13
Glass Sword 12/14
Ebony Sword 13/15
Daedric Sword 14/16
Early levels whatever you can find, with Daedric being the best. Late game Nord sword is the best, because it is the lightest and damage will come from smithing anyway.
Without smithing, you will either have to invest heavily into weapon and armor perks, or die. And i bet skyforge damage will not be enough.