Ysabella sits next to 4 phonetic neighbors — Isabella, Isabela, and Izabella are the closest matches by sound. Most share Ysabella's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pledged to God, my God is an oath"
"universal strength"
"heavenly, of the sky"
"noble, of noble birth (via Germanic Adelina)"
"feminine form of Leander (lion man)"
"striving, ambitious"
"river of black stones, wolf valley (from Guadalupe)"
"ancestral property"
"wished-for heavenly being"
"one who works the land"
"gift of God"
"mountain peak"
"blooming, flowering"
"God is with us"
"mighty in battle"
"of the sun, solar"
"little angel"
"light (Lucia = light)"
"God is my strength"
"gift, feminine grace"
"beautiful, graceful (via -elle suffix)"
Similar sound: These names share phonetic patterns with Ysabella — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew Elisheba origins, giving them the same cultural heritage as Ysabella.
Rhythm: Ysabella is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.