Yost sits next to 4 phonetic neighbors — Joost, Yost, and Jost are the closest matches by sound. Most share Yost's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"champion, lord"
"Virtuous, worthy, able"
"dear friend, huckleberry (with noble prefix)"
"flowering, flourishing"
"modern invented name; possibly derived from Toronto place name"
"defender of the mountain"
"Branch; fern or bracken"
"a sense of the familiar"
"the metal iron, element of strength and endurance"
"coined American name; no classical etymology"
"raven, crow"
"God is gracious"
"The love"
Similar sound: These names share phonetic patterns with Yost — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Breton/Germanic origins, giving them the same cultural heritage as Yost.
Rhythm: Yost is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.