Buck sits next to 4 phonetic neighbors — Duck, Tuck, and Chuck are the closest matches by sound. Most share Buck's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"male deer, strong young man"
"modern invented name"
"bard, poet (from Irish Daimhin)"
"tile maker (via Tyler)"
"son of a nobleman (variant interpretation)"
"At the byres, near the cattle sheds"
"fire, energy (sound symbolic)"
"modern American invention combining Da- prefix with Marion"
"messenger of God"
"symbol of peace and wisdom"
"universal ruler"
"exalted father"
"honoring God"
"nature name: rivers, waterways"
"of the forest, woodland"
"son of the peacemaker"
"from the rust-colored estate"
"great tide, sea wave"
"God has upheld, supported by God"
"powerful, bright-headed warrior"
Similar sound: These names share phonetic patterns with Buck — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Buck.
Rhythm: Buck is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.