Benna sits next to 5 phonetic neighbors — Bena, Jenna, and Henna are the closest matches by sound. Most share Benna's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blessed"
"mankind, human being"
"little bramble; of the thornbush; possibly auburn-hued"
"queen (from Regina)"
"flower; blooming"
"star, stars"
Similar sound: These names share phonetic patterns with Benna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Benna.
Rhythm: Benna is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.