Athen sits next to 4 phonetic neighbors — Ethan, Aiden, and Athen are the closest matches by sound. Most share Athen's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"city of Athena; city of wisdom"
"variant spelling of Caden/Kaden"
"divine mother goddess (Irish)"
"from Navarre, the plain"
"courteous, well-mannered"
"respect, reverence"
"people of the riverside forest"
"the great one, the high one"
"strawberry grower"
"little dark one"
"God is gracious"
"life"
"God heals, God supports"
"from Evreux, from the Evreux region"
"his peace"
"God exists, God is"
"victory of the people (via Nicasen interpretation)"
"son of encouragement"
"great peace"
"unique modern American name"
Similar sound: These names share phonetic patterns with Athen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Greek origins, giving them the same cultural heritage as Athen.
Rhythm: Athen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.