Fiona sits next to 4 phonetic neighbors — Fiora, Nona, and Mona are the closest matches by sound. Most share Fiona's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fair, white, pure"
"God beholds, foresight"
"transporter of goods by cart"
"fidelity, loyalty"
"member of the Gauts (Germanic tribe)"
"from the River Severn (Sabrina Fluvius)"
"Christmas, born at Christmas"
"from Magdala, woman of the tower"
"star of the sea (via Mary)"
"One who lives near a brook"
"famous warrior"
"God is gracious"
"pearl"
"divine, heavenly"
"faith, trust"
"rocky land"
"God is my strength"
"sky, cloud island"
"settlement by the leek garden"
"royal fortress meadow"
"born of fire"
Similar sound: These names share phonetic patterns with Fiona — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Fiona.
Rhythm: Fiona is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.