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"
"hazelnut"
"sea village"
"rocky, solid"
"flower that blooms in adversity"
"unique creative name combining beauty and grace"
"meadow, clearing"
"pure, beautiful"
"harvest time, autumn"
"flowing, from the river"
"new, fresh (creative interpretation)"
"God is gracious (via John → Jack)"
"son of Cadan (fighter)"
"God is my light"
"ivy climbing plant"
"stone, boulder (from Cantal region)"
"wild searcher, long seeker"
"high tower, elevated"
"life (from Eva + creative suffix)"
"maiden of the coral"
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.