Barrett sits next to 3 phonetic neighbors — Garrett, Jarrett, and Everett are the closest matches by sound. Most share Barrett's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bear strength, brave as a bear"
"servant of Jesus"
"Supplanter; one who follows at the heel"
"Yahweh is God"
"red"
"gracious, merciful"
"from the hollow"
"God will raise up"
"greatest"
"tall, imposing one"
"from Lucania"
"protector of humanity"
"defender of the people"
"one who is celebrated"
"revered, worthy of respect"
"handsome young man"
"counsel's guardian"
"ever ruler, eternal king"
"name of God"
"round barrel, lump"
"ruler of the army"
Similar sound: These names share phonetic patterns with Barrett — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Barrett.
Rhythm: Barrett is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.