Osmar sits next to 4 phonetic neighbors — Oswald, Omar, and Elmar are the closest matches by sound. Most share Osmar's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"divinely famous, famous through God"
"holy name, name of God"
"God is gracious, YHWH is merciful"
"Italian form of Paul"
"army man, bold traveler"
"crowned one, garland-wearer"
"vineyard, fruitful field"
"noble and ready"
"gift of God"
"flax, linen plant"
"famous ruler"
"protector of men"
"reborn, born again"
"defender of men"
"Saint James, contraction of Santo Jacobo"
"holding fast, steadfast protector"
"shining army"
"fruitful, fertile"
Similar sound: These names share phonetic patterns with Osmar — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English/Germanic origins, giving them the same cultural heritage as Osmar.
Rhythm: Osmar is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.