Alexey sits next to 4 phonetic neighbors — Alexei, Alexis, and Alex are the closest matches by sound. Most share Alexey's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"defender of the people"
"fire-given"
"anointed one who carries"
"light, brightness"
"dawn, golden morning"
"bear (affectionate)"
"victory of the people"
"peaceful ruler"
"world, community"
Similar sound: These names share phonetic patterns with Alexey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Alexey.
Rhythm: Alexey is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.