Duane sits next to 4 phonetic neighbors — Dwayne, Wayne, and Lane are the closest matches by sound. Most share Duane's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little dark one"
"modern invented elaboration of Ezra"
"small forest, wooded grove"
"Wise one, a sage person"
"English place name surname"
"friend"
"perfect knowledge, complete wisdom"
"church official, ecclesiastical law"
"first, beginning"
"sprout, expression"
"he enlightens, God enlightens"
"dark one"
"son of the sea (via Dylan influence)"
"glory and spear (hrod + gar)"
"elder, respected one"
"American creative variant of Trevor"
"green/fresh river"
"modern invented spelling"
"from Airelle (Norman village)"
"sharp hill, ridge"
Similar sound: These names share phonetic patterns with Duane — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Duane.
Rhythm: Duane is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.