Bijou sits next to 4 phonetic neighbors — Bijoux, Bejou, and Beau are the closest matches by sound. Most share Bijou's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"jewel, precious gem, little treasure"
"One who weans a child"
"creative modern name, beloved one"
Similar sound: These names share phonetic patterns with Bijou — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have French, from Breton bizou (ring) origins, giving them the same cultural heritage as Bijou.
Rhythm: Bijou is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.