Xaviar sits next to 4 phonetic neighbors — Xavier, Javier, and Zavier are the closest matches by sound. Most share Xaviar's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"New house; bright"
"from Attica (Athens region)"
"Root or foundation; also associated with radical and unconventional..."
"rival, industrious"
"God is gracious"
"Pattern; model; example"
"cause of rejoicing"
"echo, reverberating sound"
Similar sound: These names share phonetic patterns with Xaviar — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Basque origins, giving them the same cultural heritage as Xaviar.
Rhythm: Xaviar is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.