Hyun sits next to 3 phonetic neighbors — Yun, Hyon, and Hyuna are the closest matches by sound. Most share Hyun's Korean-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright, brilliant"
"Daughter of the sea or sea-born"
"vision, sight, auspicious viewing"
"third, threefold"
"born on Friday"
"gift from God"
"clever, prosperous"
"sun"
"palm tree"
Similar sound: These names share phonetic patterns with Hyun — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Korean origins, giving them the same cultural heritage as Hyun.
Rhythm: Hyun is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.