Isobel sits next to 5 phonetic neighbors — Isabel, Isabella, and Isabelle are the closest matches by sound. Most share Isobel's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pledged to God, God is my oath"
"lily, rose"
"farmstead near a church"
"orange tree, orange blossom"
"little rose, dear rose"
"like a bird, birdlike"
"Wished for child"
"noble and kind"
"rhyming pet form of Mary"
"Ash tree settlement"
"noble strength (alternate etymology)"
"wonderful beauty (mira + belle)"
"noble one, little noble"
"divine timelessness, immortality"
"Pure, clear"
"strength, power"
"goddess of the moon and hunt"
"short form of Antonia/Antoinette"
"bright + spring"
"hunter's meadow"
"spiritual ecstasy"
Similar sound: These names share phonetic patterns with Isobel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Isobel.
Rhythm: Isobel is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.