Janna sits next to 4 phonetic neighbors — Jana, Hanna, and Joanna are the closest matches by sound. Most share Janna's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"Beautiful"
"gazelle, tender"
"little Goth, from the Germanic tribe"
"God is gracious"
"shining with glory"
"home power, estate ruler"
"blind (saint's epithet)"
"short form of Isabella"
"fragrance of heaven"
"gift of God"
"honey, sweet"
"exalted, ascendant"
"best, excellent"
"Lake, waterfall"
"life, wished-for child"
"lake, body of water"
"bright, shining one"
"clearing of hazels"
"pleasant"
"gentle strength, mild power"
Similar sound: These names share phonetic patterns with Janna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Janna.
Rhythm: Janna is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.