Guards react to the various player equipment, including most armor, some weapons, and Daedric artifacts. Not all items in the game have dialogs.
Source: https://en.uesp.net/wiki/Skyrim:Guard...
I have some bugs with my nightingale armor and namira's ring so the guards ignore it :(

All the Guards' Reactions to the Character's Weapon and Rare Artifacts in Skyrim
Guards Reactions on Your Character Unique Artifacts in Skyrim
Skyrim Daedric Artifacts and Weapon All the Guards' Reactions
Skyrim Guards Comment on Character's Weapon and Artifacts

00:00 Iron Sword

00:16 Steel Sword

00:21 Elven Sword

00:27 Ebony Sword

00:34 Greatswords

00:40 Aegisbane

1:04 Mace of Molag Bal

1:10 The Rueful Axe

1:16 Mehrunes Razor

1:21 Skull of Corruption

1:31 Spellbreaker

1:51 Volendrung

1:56 Azura's Star