Ewan sits next to 4 phonetic neighbors — Owen, Ivan, and Ethan are the closest matches by sound. Most share Ewan's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"well-born, noble"
"tumult, noise"
"the color gray"
"noise, tumult"
"son of the fiery one"
"slender, narrow"
"wealthy protector"
"descendant of the salmon"
"resolute protector"
"from Kent, the English county"
"short form of Devon/Devlin"
"fair-haired, blonde head"
"powerful in battle"
"God is gracious"
"fortunate, good luck"
"little fire, fiery one"
"sculptor, craftsman"
"from the Roman gens Terentia"
Similar sound: These names share phonetic patterns with Ewan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Latin origins, giving them the same cultural heritage as Ewan.
Rhythm: Ewan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.