Arlan sits next to 5 phonetic neighbors — Arlen, Harlan, and Darlan are the closest matches by sound. Most share Arlan's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pledge, oath"
"modern invented name, sound-based"
"healer, physician"
"dog star"
"gift from God (popular interpretation)"
"conquering, victorious"
"high mountain, exalted"
"church"
"scholar, teacher (from Dutch Schuyler)"
"descendant of the fair one"
"fire, blaze (folk association)"
"man of law, lawyer"
"grandfather"
"powerful ruler"
"settlement of free men"
"son of Paye/Pace (son of Peace)"
"homestead by the stream"
"people's champion"
"faithfulness, devotion, steadfast allegiance"
"settlement in the brushwood"
Similar sound: These names share phonetic patterns with Arlan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish origins, giving them the same cultural heritage as Arlan.
Rhythm: Arlan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.