Susi sits next to 5 phonetic neighbors — Susie, Suzi, and Suzy are the closest matches by sound. Most share Susi's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily, rose"
"Christ-carrier"
"peaceful ruler"
"variant of Chanel; pipe, canal"
"Meadow and ewe; modern blend name"
"gracious, favored"
"little joy, dear song"
"pure, good (combined form)"
"combination of Ra and dene (valley)"
"pet form of Robert or Roberta"
"shield-wolf, defender"
"gray fort or enclosure"
"mild, calm"
"Elaboration of Linda, meaning beautiful"
"lady, mistress of the house"
"Reborn; born again; variant of Renee"
"little red one; graceful river"
Similar sound: These names share phonetic patterns with Susi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Susi.
Rhythm: Susi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.