Teresa sits next to 4 phonetic neighbors — Theresa, Therese, and Tessa are the closest matches by sound. Most share Teresa's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"summer"
"crown of laurels"
"beloved and gracious"
"gift of God"
"rival, eager"
"white settlement"
"hay clearing, hay field"
"pure, holy"
"strength, power, virtue"
"bright, shining light"
"meadow of quivering aspens"
"wished-for child, beloved"
"flat tropical grassland"
"graceful vine"
"Ceol's island, ship island"
"sun"
"royal fortress meadow"
"gift from God"
"precious gemstone formed in oysters"
"universal, entire"
"seaweed (edible)"
Similar sound: These names share phonetic patterns with Teresa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Teresa.
Rhythm: Teresa is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.