Riot sits next to 3 phonetic neighbors — Ryot, Riet, and Wyatt 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
"uproar, disturbance"
"blue"
"bright, shining one"
"clearing in the hazel grove"
"Finnish feminine name, possibly related to air or era"
"night, dark beauty"
"hay meadow, hayfield clearing"
"meadow near the hermitage"
"made of steel"
"God will add, God will increase"
"gift of God"
"captivating beauty (ensnaring)"
"member of the Gaut tribe"
"star in Virgo constellation"
"gift of God"
"beautiful May, lovable beauty"
"star"
"modern invented blend combining Bray- and -lyn suffixes"
"industrious, striving"
"sky; clouds; atmosphere"
"beautiful maiden"
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 via English 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.