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"
"strife, discord"
"little messenger of God"
"strength, power"
"protector of people"
"the meadows, fertile plains"
"of Mars, warlike"
"little one, beloved"
"father of many"
"anointed one"
"God is gracious (via John/Juan origin)"
"my candle, my light"
"lion-man, brave as a lion"
"representative, lieutenant"
"from the Basque people or region"
"of the sun, relating to the sun"
"God is with us"
"bright new home"
"sixth-born child"
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.