Joyce sits next to 3 phonetic neighbors — Joy, Joss, and Joi are the closest matches by sound. Most share Joyce's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lord"
"gift of Isis"
"reward, wages"
"home ruler, estate ruler"
"life"
"Yahweh is God"
"water nymph, spring"
"God is my joy"
"home ruler, estate ruler"
"feminine form of Michael"
"freedom, liberty"
"jovial, cheerful, good-humored"
"heart"
"grace, favor"
"angelic, messenger of God"
"jazz music combined with lake or pool"
"knowledge, sacred wisdom"
"pearl of the water"
"from Arcy (Norman French place name)"
"God is gracious"
"rocky hill, hill of kings"
Similar sound: These names share phonetic patterns with Joyce — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Breton via Old French origins, giving them the same cultural heritage as Joyce.
Rhythm: Joyce is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.