Brynna sits next to 4 phonetic neighbors — Brynn, Brenna, and Briana are the closest matches by sound. Most share Brynna's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hill, mound"
"rose flower, love and beauty"
"from Doris, sea nymph"
"peace, Ireland"
"life"
"beloved, to love"
"phonetic spelling of K.D. or variant of Cady"
"grace and meadow"
"who is like God?"
"God is gracious (via John → Jack)"
"life"
"pearl"
"beloved, gracious"
"clerk, scribe, learned man"
"new, fresh start"
"little Frances"
"flat-topped hill"
"flowing stream"
"the Stetson hat; Western American icon"
"related to ash trees"
"from the woodland clearing"
Similar sound: These names share phonetic patterns with Brynna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Brynna.
Rhythm: Brynna is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.