Chelsey sits next to 3 phonetic neighbors — Chelsea, Kelsey, and Chelsie are the closest matches by sound. Most share Chelsey's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"chalk wharf on the Thames"
"red-haired"
"ancient, primordial"
"life"
"noble beauty"
"majestic one"
"pebbly place, ford"
"honor, light"
"the moon (by association with Artemis)"
"fair bow, white crescent"
"poem with repeated refrain"
"life of Zeus; gift of the gods"
"daughter of poverty (alternate etymology)"
"valley grace"
"linked to Hecate (goddess)"
"variant of Layla meaning night in Arabic"
"beloved, wished-for child"
"sky-colored, blue"
"noble, nobility"
"crown"
Similar sound: These names share phonetic patterns with Chelsey — 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 Chelsey.
Rhythm: Chelsey is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.