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"
"coined American name; no classical etymology"
"Branch; fern or bracken"
"a sense of the familiar"
"son of Jesse / son of Jens"
"Virtuous, worthy, able"
"priceless one, of inestimable worth"
"modern invented name; possibly derived from Toronto place name"
"raven, crow"
"dear friend, huckleberry (with noble prefix)"
"The love"
"the metal iron, element of strength and endurance"
"from the mountain"
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.