Vanity sits next to 3 phonetic neighbors — Vanessa, Verity, and Vanya are the closest matches by sound. Most share Vanity's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"emptiness, futility"
"mighty, powerful"
"smooth stream"
"foreigner, stranger"
"downy-bearded, youthful"
"pure, beautiful"
"gracious, devoted wife of the gods"
"God has heard"
"my God is an oath"
"azure, referring to the Azores islands"
"elf ruler, wise counselor"
"God is my strength"
"you are loved"
"grace, favor"
"fragrant; sweet-scented"
"account; record of events"
"enlightenment, awakening"
"free woman"
"fort on the Thames / from the Roman Londinium"
"power, work, vigor"
"herb garden estate"
Similar sound: These names share phonetic patterns with Vanity — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin vanitas origins, giving them the same cultural heritage as Vanity.
Rhythm: Vanity is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.