Charnissa sits next to 5 phonetic neighbors — Charissa, Clarissa, and Denise are the closest matches by sound. Most share Charnissa's American invented-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"graceful, charming (implied by components)"
"work and power"
"strong-willed protector"
"joyful"
"heaven, the afterlife realm of joy"
"untamed, free spirit"
"island (Scottish Hebridean island name)"
"joyful, playful"
"modern creative blend of Jay and Liana"
"nobility, of noble descent"
"Finnish feminine name, possibly related to air or era"
"modern invented name"
"defender of mankind"
"bearer of good news"
"creative American formation, possibly from Tatiana (arranger)"
"follower of Christ"
"lyric, of or relating to the lyre, suitable for singing"
"meadow on a ledge"
"jade stone; green gem"
"short form of Josephine"
Similar sound: These names share phonetic patterns with Charnissa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American invented origins, giving them the same cultural heritage as Charnissa.
Rhythm: Charnissa is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.