Adelso sits next to 5 phonetic neighbors — Adelio, Adelson, and Alfonso are the closest matches by sound. Most share Adelso's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble one (from Germanic adal)"
"frozen water, crystalline coolness"
"the fourth born"
"possessing unlimited power"
"victory of the people"
"Character from the manga and anime Tokyo Ghoul"
"from the hall or manor house"
"part of the noble"
"dear one, beloved by the pool"
"intelligence, mind"
"Bright and splendid"
"of the highest class or quality"
"narrow strait, channel"
"shelter, hut"
"one who lives near a spring or who springs"
"fat tail, referring to a grouping of stars"
Similar sound: These names share phonetic patterns with Adelso — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old High German origins, giving them the same cultural heritage as Adelso.
Rhythm: Adelso is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.