Oswaldo sits next to 4 phonetic neighbors — Osvaldo, Oswald, and Ronaldo are the closest matches by sound. Most share Oswaldo's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"divine power"
"from Gabii (ancient Roman city)"
"gift of God"
"God has remembered"
"strong will, brave resolve"
"healer"
"God is gracious"
"wealthy spear"
"sun, solar"
"guarded place"
"imperial title, emperor"
"servant of God"
"adult male deer, stag"
"possibly from Basque or Persian place names"
"work of God"
"well-born, of noble birth"
"purple gemstone (jacinth)"
"ease, wealth"
"God is gracious (Juan/John) + small, humble (Pablo/Paul)"
"God has given, gift of God"
"open, wide"
Similar sound: These names share phonetic patterns with Oswaldo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Oswaldo.
Rhythm: Oswaldo is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.