List of weapons that apply special effects on attack. swords apply attack speed, axes apply bleed to enemy, maces sunder armor, spears apply slow, throwing weapons apply bleed.
2h versions apply increased effects.

swords
Engraved Backsword
Decorated Broadsword
Decorated Long Scimitar
Decorated Scimitar with Wide Grip
Lion Imprinted Saber
Decorated Kaskara
Thamaskene Steel Kaskara
Thamaskene Steel Spatha

axe
Rectangular Bitted Axe
Round Bitted Fine Steel Hatchet

mace
Light Royal Mace
Pernach
Cataphract Mace
Heavy Flanged Mace
Steel Mace

2h sword
Thamaskene Steel Two Hander
Wide Fullered Broad Two Hander
Broad Two Hander
Northlander Wide Fullered Greatsword
Sentinel
Justicier

2h axe
Heavy Executioner Axe
Northlander Decorated Two Handed Axe
Drilled Two Handed Axe
Avalanche

spears and pikes
Warrazor
Rhomphaia
Long Glaive
Voulge
Fine Steel Menavlion
Polesword
Menavlion
Glaive

throw axe
Tribesman Throwing Axe
Raider Throwing Axe
Highland Throwing Axe
Highland Throwing Axe

javelin
Jereed
Hooked Javelin
Broad Blade Javelin