Armour sits next to 4 phonetic neighbors — Armor, Arthur, and Armon are the closest matches by sound. Most share Armour's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"armor maker, one who makes or wears armor"
"son of Clement, gentle one"
"powerful ruler"
"very famous, great renown"
"Yahweh is my God"
"fair; white; bright"
"advance, progress, forward movement"
"high settlement, village on elevated land"
"noble guardian, lord protector"
"From Old French mote meaning a mound, hillock, or moat; a topograph..."
Similar sound: These names share phonetic patterns with Armour — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Latin origins, giving them the same cultural heritage as Armour.
Rhythm: Armour is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.