Letisha sits next to 4 phonetic neighbors — Leticia, Latisha, and Laetitia are the closest matches by sound. Most share Letisha's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joy, happiness"
"genuine, true, perfect"
"merriment, joyful laughter"
"flowering, in bloom"
"grove of poplar trees, tree-lined avenue"
"lily flower, night"
"Olive tree; peace; a variant of Olivia"
"she who maintains possessions"
"God is gracious"
"modern coinage with melodic -nell suffix"
Similar sound: These names share phonetic patterns with Letisha — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Letisha.
Rhythm: Letisha is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.