Neizan sits next to 4 phonetic neighbors — Nason, Nazon, and Razan are the closest matches by sound. Most share Neizan's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gracious, honorable"
"courteous, polite"
"God will save"
"from Hadria, of the Adriatic"
"the god of love"
"Yahweh is gracious"
"bright fame, shining might"
"God is with us"
"Yahweh is merciful"
"priceless one, beyond praise"
"one who helps or aids"
"who is like God? (rhetorical — implying no one)"
"saint of God, blessed by God"
"castle, new home"
"short form of Linus or Paulino"
"one who works the earth"
"peace power"
"gift of Isis"
"servant, worshipper of God"
Similar sound: These names share phonetic patterns with Neizan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Basque origins, giving them the same cultural heritage as Neizan.
Rhythm: Neizan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.