Koast sits next to 4 phonetic neighbors — Coast, Ghost, and Roast are the closest matches by sound. Most share Koast's Latin/English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"coast, shoreline"
"the great beast, tiger"
"God's faithful one"
"distinguished leader"
"compound Biblical name"
"lover of churches, bright-headed"
"dweller at the broad woodland clearing"
"energy, spirit, vigor"
"Dutch/Scandinavian spelling of Isaac from Yitzchak"
"little dark one"
"the great river (via Zaire)"
"vivid, alive"
"God is my judge (short form of Daniel)"
"enthusiastic speech, advice"
"good, virtuous (possible East African origin)"
"small deer"
"Yahweh is my strength"
"God has helped"
"worker, one who builds"
"strengthened by God"
"storehouse, place of abundance (from silo)"
Similar sound: These names share phonetic patterns with Koast — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/English origins, giving them the same cultural heritage as Koast.
Rhythm: Koast is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.