Oasis sits next to 4 phonetic neighbors — Opal, Isis, and Alexis are the closest matches by sound. Most share Oasis's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fertile refuge in a desert"
"celestial, divine"
"gracious, favored by God"
"slender, slim"
"little lake"
"dispute, rivalry"
"star"
"brave, valiant"
"one who nurtures, nourishes"
"pearl"
"zero, spirit"
"inspired by Nevaeh (heaven reversed)"
"son of Jack"
"orchid flower"
"from Berlin; swamp, marsh (Slavic root of Berlin)"
"curly-haired"
"alive, living"
"plaything (original Latin sense)"
"radiant one"
"to be well, to have worth"
"God's gift"
Similar sound: These names share phonetic patterns with Oasis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Egyptian-Greek origins, giving them the same cultural heritage as Oasis.
Rhythm: Oasis is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.