Tishia sits next to 4 phonetic neighbors — Tisha, Trisha, and Letitia are the closest matches by sound. Most share Tishia's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joy, happiness"
"joyful, merry, carefree"
"little one"
"blind"
"flowering, blooming"
"well-born, noble"
"life, living"
"of the sorrows (religious title)"
"moon"
"pearl"
"celestial, divine"
"noble and bright"
"from the island of Thera"
Similar sound: These names share phonetic patterns with Tishia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin (from laetitia) origins, giving them the same cultural heritage as Tishia.
Rhythm: Tishia is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.