Scarleth sits next to 3 phonetic neighbors — Scarlett, Scarlet, and Charlotte are the closest matches by sound. Most share Scarleth's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright red, scarlet-colored"
"heavenly moonlight, sky beauty"
"bright, shining one"
"noble type (via Heidi)"
"bright, luminous"
"pure"
"man of God, messenger"
"honesty, veracity, reality, that which is real"
"torch, shining light"
"pledged to God"
"of the Tatian family"
"grace, favor (from Anna/Hannah)"
"beloved, dear"
"modern invented name"
"brightness, brilliance"
"dove"
"my helper, my aid"
"heavenly, of the sky"
"drop of the sea, beloved"
"wise judgment, knowledge, discernment"
Similar sound: These names share phonetic patterns with Scarleth — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Scarleth.
Rhythm: Scarleth is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.