Lennon sits next to 4 phonetic neighbors — Lennan, Lenon, and Lennox are the closest matches by sound. Most share Lennon's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little cloak, beloved"
"son of Judd"
"Botolph's town, market town"
"gatekeeper, doorman"
"estate of the fifth son"
"from the city of lions"
"son of the red-haired one"
"emperor, caesar"
"praise through music"
"chief friend, noble friend"
"pledge, security deposit"
"belonging to the immortals"
"continuous improvement"
"strong, virtuous, honorable"
"wealthy guardian"
"true, faithful"
"fifth"
"noble bright (adal + beraht)"
"mountain goat, to ascend"
"untamed, wild-natured"
"western clearing"
Similar sound: These names share phonetic patterns with Lennon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish origins, giving them the same cultural heritage as Lennon.
Rhythm: Lennon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.