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"
"lion"
"from Lucania, southern Italy"
"gift of God"
"servant of God"
"money, currency"
"honoring God, one who honors God"
"determined guard, resolute protector"
"garden of God, orchard"
"my God (short for Elijah)"
"God has given, gift of God"
"wounded in the thigh"
"of Easter, born at Passover"
"industrious, hardworking, rival"
"God is gracious"
"open, wide"
"God has helped, Yahweh has helped"
"God has helped"
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.