Boris sits next to 4 phonetic neighbors — Morris, Doris, and Norris are the closest matches by sound. Most share Boris's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
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"battle glory"
"from Ilium, ancient Troy"
"man of Armenia, Armenian"
"small, humble"
"people's champion"
"guardian, watchman"
"cloud"
"given by God"
"wealthy friend, divine wealth"
"Winda's homestead, windy village"
"victor, winner"
"God has shown favor"
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Similar sound: These names share phonetic patterns with Boris — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Proto-Slavic origins, giving them the same cultural heritage as Boris.
Rhythm: Boris is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.