Ladarius sits next to 3 phonetic neighbors — Darius, Ladarian, and Jarius are the closest matches by sound. Most share Ladarius's Persian via African-American construction-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"possessor of goodness, kingly"
"supplanter, he who follows at the heel (as Jacob)"
"divine mother goddess (Irish)"
"woodland clearing, meadow"
"chief, leader"
"from the riverbank settlement"
"head of the pass"
"king's portion"
"alder tree, from the grove"
"modern phonetic respelling of Caden/Caiden"
"fortified stronghold"
"wise guardian warrior (fictional FFX character meaning)"
"modern invented name"
"modern American coinage"
"dark one, dark-haired"
"virtuous, upright"
"variant of Oswin or Ervin"
"noble, virtuous"
"son of Aphrodite, Sicilian king"
"stream, ford"
"Yahweh is my strength"
Similar sound: These names share phonetic patterns with Ladarius — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Persian via African-American construction origins, giving them the same cultural heritage as Ladarius.
Rhythm: Ladarius is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.