Niamani sits next to 4 phonetic neighbors — Niamh, Niamara, and Amani are the closest matches by sound. Most share Niamani's Old Irish 'niamh'-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright, radiant (via Irish Niamh)"
"traveler from far lands"
"hyacinth"
"kingly, noble"
"pointed projectile; symbol of direction and purpose"
"bright, luminous"
"land of the Welsh people"
"grey-haired one"
"pure"
"meadow clearing"
"radiant, luminous one"
"ruler of the home"
"cloud clearing"
"whole, universal, entire"
"rye clearing"
"brave lion"
"June, sixth month"
"optimistic, bright, hopeful"
"light"
"dew of heaven, morning dew"
Similar sound: These names share phonetic patterns with Niamani — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish 'niamh' origins, giving them the same cultural heritage as Niamani.
Rhythm: Niamani is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.