Rejean sits next to 5 phonetic neighbors — Régine, Regan, and Jean are the closest matches by sound. Most share Rejean's Latin/French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ruler, king's heir"
"dark, black"
"noble, exalted one"
Similar sound: These names share phonetic patterns with Rejean — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/French origins, giving them the same cultural heritage as Rejean.
Rhythm: Rejean is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.