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"
"elf counsel (via Alfrid)"
"pure, clear"
"bright fame, renowned"
"mild, calm"
"Christ-carrier"
"Elaboration of Linda, meaning beautiful"
"joyful round song"
"variant of Chanel; pipe, canal"
"valley, mountain glen"
"Meadow and ewe; modern blend name"
"little joy, dear song"
"gray fort or enclosure"
"lady, mistress of the house"
"Pure; stream"
"Reborn; born again; variant of Renee"
"shield-wolf, defender"
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.