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"
"Fern meadow; fern clearing"
"narrow strait (base: Kyle)"
"short form of Ziggy"
"dearly beloved"
"From the homestead of Aegen; Old English place-name surname"
"variant of Vernon: alder grove, spring-like"
"from the Bilt (a hilly area near Utrecht, Netherlands)"
"unique phonetic name"
"noble, good"
"Son of Claus (victory of the people); surname used as a given name"
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.