Alyx sits next to 4 phonetic neighbors — Alex, Alix, and Alexa are the closest matches by sound. Most share Alyx's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"defender of mankind"
"royal clearing, king's wood"
"moon, moon goddess"
"from Saint Denis"
"God will add; gracious"
"pearl"
"olive tree"
"mighty in battle"
"noble kind, noble type"
"musical conclusion or tail"
"chalk wharf, landing place on the Thames"
"ivory-white, creamy white"
Similar sound: These names share phonetic patterns with Alyx — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Alyx.
Rhythm: Alyx is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.