Jaycee sits next to 3 phonetic neighbors — Jackie, Jaci, and Casey are the closest matches by sound. Most share Jaycee's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"variant of Jackie or Casey"
"strength, power, virtue"
"beloved and gracious"
"bright fame, shining fame"
"life"
"life"
"descendant of Fionnlaoich (fair hero)"
"darling, beloved one"
"sun"
"beloved, little Mary"
"from Ireland, Ireland"
"descendant of a ruler"
"summer"
"estate of the fifth son"
"follower of Christ, anointed one"
"mountainous, of the mountains"
"home ruler, estate ruler"
"well-spoken of"
"hardworking, industrious"
"captivating, snare"
Similar sound: These names share phonetic patterns with Jaycee — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English origins, giving them the same cultural heritage as Jaycee.
Rhythm: Jaycee is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.