Antonio sits next to 3 phonetic neighbors — Anthony, Anton, and Antony are the closest matches by sound. Most share Antonio's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"priceless, of inestimable worth"
"populous, thriving"
"lion-bold; brave as a lion"
"Italian form of John, gift of God"
"from Lucania"
"God is gracious"
"free man"
"supplanter"
"glorious battle"
"from Sebastia"
"God will hear"
"famous warrior, renowned in battle"
"wealthy guardian"
"the new house"
"beloved, may God protect"
"manly, brave"
"angel; messenger of God"
"Free"
"powerful, brave king"
"God is salvation, YHWH saves"
Similar sound: These names share phonetic patterns with Antonio — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Antonio.
Rhythm: Antonio is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.