Sachi sits next to 4 phonetic neighbors — Sadie, Sakura, and Staci are the closest matches by sound. Most share Sachi's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bliss, good fortune, happiness"
"the pool or lake"
"beautiful, melodious (evocative)"
"honor, honorable"
"peaceful, calm"
"whole and gracious, universal grace"
"smooth stream"
"to rule, royal authority"
"God is my strength"
"heavenly child, royal flowers"
"goddess Savitri, divine solar figure"
"theory, to observe (inspired by)"
"ray of light, dawn (implied by suffix)"
"freckled, speckled"
"love"
"little drop of moisture, rain"
"bird, life-breath"
"strength, force"
"free woman"
"goddess of knowledge and arts"
Similar sound: These names share phonetic patterns with Sachi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Sachi.
Rhythm: Sachi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.