Nasai sits next to 4 phonetic neighbors — Nasir, Nassir, and Naseem are the closest matches by sound. Most share Nasai's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Nasa (place in Khurasan)"
"noble, dignified"
"spreader of light, field of light"
"the hidden one, the invisible"
"prophet swallowed by whale"
"pure one devoted to God"
"the praised one, the chosen one"
"righteous, blessed"
"light-bearer"
"God will add, God increases"
"God is beautiful"
"strong woman, gazelle"
"God is gracious (via Shaun)"
"beloved, friend"
"most pious, most rightly guided"
"light, splendor, radiance"
"lord, master (Ky- root from Greek Kyrios)"
"homeland, native land, territory"
"one who lives long, prosperous"
"Of the moon god Sin; clay terrain"
Similar sound: These names share phonetic patterns with Nasai — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic nisba origins, giving them the same cultural heritage as Nasai.
Rhythm: Nasai is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.