Art sits next to 4 phonetic neighbors — Arthur, Hart, and Bart are the closest matches by sound. Most share Art's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bear king"
"associated with Al-Khidr, the immortal guide"
"son of Kai/Kay (from Scandinavian -sen suffix)"
"peace settlement"
"first of the month, calends"
"powerful, compassionate (fictional origin)"
"from Luca, of the light"
"pledge, hostage"
"flame of God"
"heavens, celestial realm"
"god of justice"
"the river that swallows all rivers (from Zaire/nzadi)"
"gift of God"
"mourner"
"God strengthens"
"God is gracious"
"rye meadow"
"that which is about to arrive"
"new house"
"variant of Oswin or Ervin"
Similar sound: These names share phonetic patterns with Art — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic (artos) origins, giving them the same cultural heritage as Art.
Rhythm: Art is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.