Carlyle sits next to 4 phonetic neighbors — Carlisle, Carlin, and Carlo are the closest matches by sound. Most share Carlyle's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the fortified city"
"brother, brotherly"
"son of Ben, son of the right hand"
"rope, cord (from Old French 'corde')"
"of Mars, warlike"
"gift of God"
"made by God"
"victory of the people"
"lively energy, kicks"
"little wolf, wolf pup"
"possessor of good"
"the ringed planet, sixth from the sun"
"gift, blessing (invented, Zion root)"
"bear"
"dear one"
"marshy meadow"
"sight, ability to see"
"son of David, from Hebrew Dodavahu (beloved)"
"possession, acquisition"
"light of God"
"like a big body of water"
Similar sound: These names share phonetic patterns with Carlyle — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Welsh via English origins, giving them the same cultural heritage as Carlyle.
Rhythm: Carlyle is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.