Sereniti sits next to 4 phonetic neighbors — Serenity, Serenata, and Trinity are the closest matches by sound. Most share Sereniti's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"clear skies, fair weather (original meteorological sense)"
"from Asia, of the East"
"ocean, sea"
"light, illumination"
"beloved, wished-for child (via Hebrew Miriam)"
"petite, feminine form of Charles"
"variant of Amari meaning strength or grace"
"bright, shining (variant of Helen)"
"dawn, morning light"
"dark beauty"
"mighty in battle"
"bitter"
"name (as in one who is named)"
"modern invented name"
"combination of char + issa (honey/bee)"
"dweller by the river"
"hazel tree by the woodland clearing"
"Christian, anointed one"
"modern creative blend of Jay and Liana"
"fresh growth, spring"
"sea, ocean"
Similar sound: These names share phonetic patterns with Sereniti — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Sereniti.
Rhythm: Sereniti is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.