Mariano sits next to 4 phonetic neighbors — Mario, Marino, and Marciano are the closest matches by sound. Most share Mariano's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of the gens Maria, manly"
"free man"
"God enlightens"
"spiritually reborn through baptism"
"God is gracious"
"mighty peace"
"God is gracious"
"may God protect (folk etymology from Santiago)"
"love of God"
"dedicated to Mars"
"from Sebaste"
"God has helped"
"speaking good things"
"peace"
"the Lord supports"
"from France"
"manly, brave"
"bright"
"bright, splendid"
Similar sound: These names share phonetic patterns with Mariano — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Mariano.
Rhythm: Mariano is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.