Sunisa sits next to 4 phonetic neighbors — Sunita, Samira, and Anisa are the closest matches by sound. Most share Sunisa's Thai, from Sanskrit-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"good mind, beautiful mind"
"hazel tree (via Hazel)"
"great, large"
"my father rejoices"
"calm hero, steady and composed"
"elaboration of Etta (ruler of the home)"
"victory"
"palm fruit"
"righteous, virtuous, pious"
"yawning emptiness, vast chasm"
"apple moon"
"Modern invented name with no traditional etymology"
"fair one, bright, handsome"
"Myrtle tree; bride"
"palatial, shrine-like"
"elm tree"
Similar sound: These names share phonetic patterns with Sunisa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Thai, from Sanskrit origins, giving them the same cultural heritage as Sunisa.
Rhythm: Sunisa is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.