Joy sits next to 4 phonetic neighbors — Joe, Joey, and Roy are the closest matches by sound. Most share Joy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great happiness, delight"
"little fire"
"strength, exalted one"
"born of the ocean wave"
"God is gracious"
"small songbird, finch"
"modern blend of Jay and Gavin elements"
"precious, gentle"
"a Breton, from Brittany"
"valley"
"graced by God"
"Caesar, leader"
"title of honor (from Titus)"
"pure, clear"
"volcanic black glass"
"God is gracious"
"honor of God"
"white, fair-haired"
"from the stone settlement"
"my air, my breath of life"
"God is gracious"
Similar sound: These names share phonetic patterns with Joy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French joie via Latin gaudium origins, giving them the same cultural heritage as Joy.
Rhythm: Joy is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.