Calyx sits next to 4 phonetic neighbors — Calix, Felix, and Alex are the closest matches by sound. Most share Calyx's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"cup, chalice"
"drawn from the water"
"son of Daw (David), beloved son"
"sea and land"
"possessor of good"
"son of Madoc (gift of God)"
"people's ruler"
"beloved, gift of God"
"bequest, inheritance"
"powerful in battle (alternate interpretation)"
"settlement by the bridge"
"pasture in a marsh"
"archangel name variant"
"son of Brayden"
"clearing in the forest"
"immense quantity, boundless"
"descendant of Rian"
"battle, fighter"
"ruler of the people"
"modern coined name, variant of Javion"
"invented modern name"
Similar sound: These names share phonetic patterns with Calyx — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Calyx.
Rhythm: Calyx is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.