Niah sits next to 5 phonetic neighbors — Nia, Mia, and Leah are the closest matches by sound. Most share Niah's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright, radiant"
"from Zaria, princess of the city"
"rapids, flowing water"
"calm waters"
"pleasantness, pleasant one"
"pleasantness, sweetness"
"fellow countrymen"
"calm, tranquil"
"pledged to God"
"God is gracious"
"best friend, confidante"
"little dark one"
"divine understanding"
"exalted, high"
"fair and smooth, white and soft"
"modern coined variant of Jane"
"little dark one"
"beautiful praise (via Greek + Hebrew roots)"
"season's beginning"
Similar sound: These names share phonetic patterns with Niah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Niah.
Rhythm: Niah is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.