Armen sits next to 4 phonetic neighbors — Arman, Armin, and Herman are the closest matches by sound. Most share Armen's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"man of Armenia, Armenian"
"charitable, benevolent"
"little one"
"short form of Bogoris (divine gift)"
"given by God"
"eagle, swift and free"
"unconquered, victorious"
"desire, wish, longing"
"the sky, heavenly"
"king of kings, realm"
Similar sound: These names share phonetic patterns with Armen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Armenian origins, giving them the same cultural heritage as Armen.
Rhythm: Armen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.