Holley sits next to 3 phonetic neighbors — Holly, Hollis, and Hale are the closest matches by sound. Most share Holley's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"holly tree, evergreen plant with red berries"
"Border land by the meadow"
"Royal meadow; kings clearing"
"short form of Critias"
"from France (the land of the Franks)"
"son of Edward"
"dweller near the holly trees"
"rose"
Similar sound: These names share phonetic patterns with Holley — 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 Holley.
Rhythm: Holley is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.