Dua sits next to 4 phonetic neighbors — Luna, Lua, and Hua are the closest matches by sound. Most share Dua's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"supplication to God"
"fate, destiny"
"gladness, celebration"
"flower, blossom, radiance"
"sky, heaven"
"phonetic/aesthetic (various kanji)"
"hope, aspiration"
"elevated, lofty"
"moon"
"glow, brightness"
"faith, belief"
"grace, adornment"
"ray of light, illuminating"
"white antelope, gazelle"
"elevated, high in status"
"alive, living"
"gift, benefit"
"divine"
"God is gracious"
Similar sound: These names share phonetic patterns with Dua — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Dua.
Rhythm: Dua is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.