Lamar sits next to 4 phonetic neighbors — Lamarr, Lamont, and Tamar are the closest matches by sound. Most share Lamar's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of the sea, of the lake"
"sky, heavens"
"brotherly, genuine"
"fifth-born child"
"strong as an oak"
"sad, melancholy (folk etymology)"
"God has seen"
"gift of God"
"continuous improvement (kaizen-inspired)"
"He has given (divine gift)"
"metalworker, blacksmith"
"fox"
"moon"
"God has been gracious"
"coastal land, border land"
"soaring, high-flying"
"merciful, compassionate"
"forest"
"oracle, mouth of brass"
"life-giving"
"remnants of the lake"
Similar sound: These names share phonetic patterns with Lamar — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Lamar.
Rhythm: Lamar is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.