Whitney sits next to 3 phonetic neighbors — Brittney, Whitley, and Winnie are the closest matches by sound. Most share Whitney's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"white island"
"beautiful flower"
"harmful spirits, demons"
"rose of Sharon (biblical flower)"
"bailiff, law officer, estate manager"
"work, labor"
"child of light"
"elf power"
"strong clearing"
"forgiveness"
"pure, clean"
"sunlight, moon (alternate etymology)"
"freedom (when short for Liberty)"
"Mae (spring month) + Lynn (lake)"
"God is abundance"
"hollow, cauldron"
"star that suddenly brightens"
"protected by God"
"clear, evident"
"noble, bright"
"variant of Jackie or Casey"
Similar sound: These names share phonetic patterns with Whitney — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English place name origins, giving them the same cultural heritage as Whitney.
Rhythm: Whitney is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.