Dallis sits next to 4 phonetic neighbors — Dallas, Alice, and Callis are the closest matches by sound. Most share Dallis's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dwelling by the meadow valley"
"most beautiful, fairest"
"dark, black-haired"
"my God is abundance"
"cloud, mist"
"beloved, wished-for child"
"high, exalted, sublime"
"divine favor, gift from God"
"friendship, constancy (flower language)"
"son of Matthew, gift of God"
"lion-hearted"
"ray of light, dawn (implied by suffix)"
"praised"
"shelter, harbinger"
"rare, elegant material"
"rival, striving to excel"
"small, little"
"pure, beloved"
"gracious, beautiful"
"modern invented name; no fixed historical meaning"
Similar sound: These names share phonetic patterns with Dallis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic dal + eas origins, giving them the same cultural heritage as Dallis.
Rhythm: Dallis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.