Karston sits next to 5 phonetic neighbors — Carsten, Garston, and Carson are the closest matches by sound. Most share Karston's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Christian, follower of Christ"
"flowing"
"variant spelling of Dylan"
"God has uplifted"
"he who supplants, holds by the heel"
"unwavering, firm"
"warrior's town"
"thunder, god of thunder"
"speckled, freckled"
"bright, shining, moon-like"
"path, way (via Cason etymology)"
"God's faithful one"
"to glorify, worship, and give thanks to God"
"bright-headed"
"alert in battle"
"fox-colored"
"from Evreux, from the Evreux region"
"son of one with a bright mind"
"free man"
"The Lord is my God"
Similar sound: These names share phonetic patterns with Karston — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin via Scandinavian origins, giving them the same cultural heritage as Karston.
Rhythm: Karston is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.