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 abstains from forbidden things"
"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.