Deja sits next to 4 phonetic neighbors — Deja, Naja, and Shea are the closest matches by sound. Most share Deja's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sense of familiarity"
"God is my father"
"olive tree"
"truth, unconcealedness"
"grace, favor from God"
"sky, heaven"
"slender, fair"
"bright, radiant"
"free woman, strong"
"creative respelling of Germaine (warm brotherly love)"
"divine power (short for Oswald)"
"joy, delight, happiness"
"high-born, sublime"
"modern compound of Ken + Lee"
"whole, universal power"
"rival, industrious (Emily variant)"
"box tree meadow"
"handsome one from the meadow"
"desired, wished for"
"blend of Vanessa and Penelope; weaver of nets"
Similar sound: These names share phonetic patterns with Deja — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have French origins, giving them the same cultural heritage as Deja.
Rhythm: Deja is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.