Athanasios sits next to 3 phonetic neighbors — Athanasius, Thanos, and Anastasios are the closest matches by sound. Most share Athanasios's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"immortal, deathless"
"God is salvation"
"my God is Yahweh"
"sun god"
"city of Athena; city of wisdom"
"son of consolation"
"lover of horses"
"one who is led (possibly referring to blindness)"
"excellence, virtue"
"farmer, earth-worker"
"unwavering, firm"
"My God is Yahweh"
"from Arcadia, of the idyllic land"
"destroyer"
Similar sound: These names share phonetic patterns with Athanasios — 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 Athanasios.
Rhythm: Athanasios is a 5-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.