Rylo sits next to 4 phonetic neighbors — Rylan, Rilo, and Kylo are the closest matches by sound. Most share Rylo's American invented-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"modern invented name"
"carrier, one who bears"
"modern invented name, possibly 'sincere air' or 'great river'"
"Gomeric's hill"
"father of God"
"Caesar, imperial leader"
"slender, narrow"
"land of oak trees"
"invented elaboration of Kameron"
"sea"
"God is salvation"
"divine bear"
"watchful, vigilant"
"little poet, little philosopher"
"divine protection"
"elf friend, noble friend"
"voice of God"
"royal power, royal ruler"
"winding river"
"bookbinder, scribe"
Similar sound: These names share phonetic patterns with Rylo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American invented origins, giving them the same cultural heritage as Rylo.
Rhythm: Rylo is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.