Lowell sits next to 4 phonetic neighbors — Powell, Howell, and Rowell are the closest matches by sound. Most share Lowell's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"young wolf"
"son of Mart (Martin)"
"split, torn apart"
"world ruler"
"living water, strength"
"canyon, deep gorge"
"modern invented name with energetic sound"
"modern coined name"
"king's town"
"roses"
"light of God (related to Uriel)"
"revered, venerable"
"God has remembered"
"priceless, flourishing (via Anthony/Antonius)"
"God enlightens"
"valley of the River Kent"
"from Milan, middle of the plain"
"settlement of Leaxa's people"
"God will strengthen"
"golden, gilded"
"sun"
Similar sound: These names share phonetic patterns with Lowell — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Lowell.
Rhythm: Lowell is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.