Arsenio sits next to 5 phonetic neighbors — Antonio, Cornelio, and Fabricio are the closest matches by sound. Most share Arsenio's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"virile, masculine, strong"
"man of Rome, from Rome"
"Yahweh is gracious"
"Titaness, mother of Apollo and Artemis"
"the new house"
"belonging to God"
"one who stammers"
"famous brilliance"
"red (from Spanish rojas)"
"lover of earth, earth-born"
"virtuous, without wickedness"
"first among thinkers"
"lord, master"
"sunlike, radiant"
"noble ruler (combined symbolic meaning of eagle + wolf)"
"healer"
"devoted to Demeter"
Similar sound: These names share phonetic patterns with Arsenio — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Arsenio.
Rhythm: Arsenio is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.