Chrissy sits next to 4 phonetic neighbors — Christy, Missy, and Lissy are the closest matches by sound. Most share Chrissy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"follower of Christ"
"royal clearing, king's wood"
"flame, hill"
"Wide meadow or wide island"
"God is gracious"
"pearl"
"miracle of God"
"defender of the people (from Greek roots of Lex)"
"elf ruler (alternative folk etymology)"
"noble kind, noble type"
"God will add; gracious"
Similar sound: These names share phonetic patterns with Chrissy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek/Latin origins, giving them the same cultural heritage as Chrissy.
Rhythm: Chrissy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.