Riot sits next to 3 phonetic neighbors — Wyatt, Rhett, and Rye are the closest matches by sound. Most share Riot's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noisy disturbance, civil commotion"
"uncertain, possibly Norse or Welsh origin"
"without wax, pure"
"from Percy (Norman place name)"
"ewe herder"
"chief, lord"
"from the marshy plain"
"physician, healer"
"intersection, meeting point"
"beloved (from David)"
"little hawk or blackbird"
"brave in battle"
"wise as a wolf"
"God is with us"
"claw of a bird of prey"
"charcoal maker"
"modern invented name, possibly 'sincere air' or 'great river'"
"holy name, sacred name"
"spotted one"
"hill, high ground"
Similar sound: These names share phonetic patterns with Riot — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French riote origins, giving them the same cultural heritage as Riot.
Rhythm: Riot is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.