Janaja sits next to 5 phonetic neighbors — Janaya, Janae, and Tanaja are the closest matches by sound. Most share Janaja's Hebrew via various traditions-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"One who weans a child"
"jewel, precious gem, little treasure"
Similar sound: These names share phonetic patterns with Janaja — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via various traditions origins, giving them the same cultural heritage as Janaja.
Rhythm: Janaja is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.