Kathry sits next to 4 phonetic neighbors — Kathryn, Kathy, and Audrey are the closest matches by sound. Most share Kathry's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure"
"bright fame"
"American creative invention"
"bright, shining"
"God is my oath"
"prince, hill settlement"
"Of the sea, warrior; defender of the sea"
"honoring God, one who honors God"
"supplanter"
"fairy"
"light, famous"
"pure, clear"
"messenger of God; angel"
"faith"
"Variant of Sherman; from the shearing settlement"
"Possibly a variant of Teresa/Therese, meaning to reap or harvest"
Similar sound: These names share phonetic patterns with Kathry — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek (katharos) origins, giving them the same cultural heritage as Kathry.
Rhythm: Kathry is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.