Keller sits next to 4 phonetic neighbors — Kellar, Keeler, and Kella are the closest matches by sound. Most share Keller's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"cellar keeper, wine steward"
"golden meadow"
"gift"
"blooming, fertility"
"fairy palace by the lake"
"pure, clear (from Katherine)"
"hazelnut"
"heavenly Taylor, sky child"
"wished-for child, grace"
"alive, living"
"friend, joy"
"oak tree"
"triumph of the nation"
"shade, shadow, protection"
"noble kind (from Adelaide)"
"maiden of the coral"
"jasmine flower"
"pearl"
"little rose, rose garden"
"precious gemstone, treasure"
"airy, free-spirited"
Similar sound: These names share phonetic patterns with Keller — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have German origins, giving them the same cultural heritage as Keller.
Rhythm: Keller is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.