Hailey sits next to 3 phonetic neighbors — Hayley, Haley, and Haleigh are the closest matches by sound. Most share Hailey's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hay meadow, hay clearing"
"tower; watchtower"
"park warden"
"sunbeam, radiant one"
"most holy"
"from the town of Brielle"
"noble strength"
"royal fortress meadow"
"delicate, weakened"
"noble oath"
"sharp, keen, praise"
"flute player, pipe player"
"courageous, valiant"
"dark-complexioned, of dark appearance"
"sailor, one who sails"
"flat tropical grassland"
"rival, striving"
"son of the earth"
"life, living"
"breath, to breathe"
"light, dawn (by association with Aurora)"
Similar sound: These names share phonetic patterns with Hailey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English place name (haeg + leah) origins, giving them the same cultural heritage as Hailey.
Rhythm: Hailey is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.