Stelle sits next to 4 phonetic neighbors — Stella, Estelle, and Estella are the closest matches by sound. Most share Stelle's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"star, stars"
"mountain peak"
"contemplation, observation"
"flower; blooming"
"star of the sea, beloved"
"shining glory"
"God is gracious (from Jean/Jane lineage)"
"dear one"
"flower"
"modern invented name, possibly echoing Zoe (life) with X-prefix drama"
"From Wales; a foreigner or stranger"
"cliff town"
"rosy-cheeked, bright"
"creative American name coinage"
"mankind, human being"
Similar sound: These names share phonetic patterns with Stelle — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin via Italian origins, giving them the same cultural heritage as Stelle.
Rhythm: Stelle is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.