Bucky sits next to 4 phonetic neighbors — Lucky, Ducky, and Rocky are the closest matches by sound. Most share Bucky's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"male deer, vigorous young man"
"unique phonetic name"
"victorious protection (via Sigmund)"
"dearly beloved"
"wishes, desires"
"from the Bilt (a hilly area near Utrecht, Netherlands)"
"Fern meadow; fern clearing"
"variant of Vernon: alder grove, spring-like"
"modern invented name"
"Son of Claus (victory of the people); surname used as a given name"
"From the homestead of Aegen; Old English place-name surname"
Similar sound: These names share phonetic patterns with Bucky — 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 Bucky.
Rhythm: Bucky is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.