Miller sits next to 4 phonetic neighbors — Milo, Milner, and Miles are the closest matches by sound. Most share Miller's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one who mills grain"
"home ruler"
"rest, repose"
"ruler of the elves"
"cool breeze over the mountains"
"broad meadow"
"winding valley"
"one who bails, deliverer"
"group, band, team"
"at the ford"
"friend, companion"
"enduring and beautiful"
"little battle"
"to hold fast, to restrain"
"of the Caspian Sea"
"from the green valley"
"from the bridges"
"from Laurentum, laurel-crowned"
"hollow, empty"
"place of peace, tranquil"
"gift of God"
Similar sound: These names share phonetic patterns with Miller — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English (mylenweard) origins, giving them the same cultural heritage as Miller.
Rhythm: Miller is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.