Iyanu sits next to 3 phonetic neighbors — Iyanu, Yanu, and Iyana are the closest matches by sound. Most share Iyanu's Yoruba-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"astonishment, marvel"
"hazel tree (via Hazel)"
"lake colony settlement"
"victory"
"home, house-maker (via Mason/Maison)"
"lover, sweetheart"
"little sun, sunny"
"safe harbor"
"sun; dream (Sanskrit)"
"through faith, child of faith"
"the clove spice, nail-shaped flower bud"
"noble, honorable"
"modern invented form with -ara suffix"
"my desire, my wish"
"fruit that cries (expels water)"
"from Ireland, Irish woman (from Erin)"
"Variant of Theia; Greek Titan goddess of sight and the sky, mother ..."
Similar sound: These names share phonetic patterns with Iyanu — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Yoruba origins, giving them the same cultural heritage as Iyanu.
Rhythm: Iyanu is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.