Raiden sits next to 5 phonetic neighbors — Raden, Aiden, and Hayden are the closest matches by sound. Most share Raiden's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"thunder and lightning"
"elf ruler, elf power"
"tropical climbing plant"
"divine, golden"
"slender and fair"
"grace, favor"
"woman"
"life"
"grace, favor"
"ready for battle, noble"
"new, novel"
"from the royal city"
"of noble birth"
"my help"
"God is gracious"
"she who rules"
"coined modern form of Lynn"
"modern blended name"
"blazing iron"
"member of the Gauts tribe"
"beautiful, new"
Similar sound: These names share phonetic patterns with Raiden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Raiden.
Rhythm: Raiden is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.