Lettie sits next to 3 phonetic neighbors — Betty, Netty, and Lottie are the closest matches by sound. Most share Lettie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joy, happiness, gladness"
"Yahweh is God"
"God is gracious"
"place of the La Ramee family"
"counsel, protection"
"wealthy, possessor"
"God is my joy"
"curly-haired, descendant of Caiside"
"star that suddenly brightens"
"wished-for child, beloved"
"healthy, whole (heil)"
"crown of laurels"
"hillside lake, brae near the loch"
"grace and drop of the sea (Maria + Anna)"
"defender, helper of mankind"
"Mae (spring month) + Lynn (lake)"
"beautiful rose"
"holy, blessed"
"vine, climbing plant"
"gentle horse"
"vigilant in battle, watchful warrior"
Similar sound: These names share phonetic patterns with Lettie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lettie.
Rhythm: Lettie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.