Abdo sits next to 3 phonetic neighbors — Abdou, Abdul, and Aldo are the closest matches by sound. Most share Abdo's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
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"servant, worshipper (short form of Abdullah)"
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"lord of the mountains"
Similar sound: These names share phonetic patterns with Abdo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Abdo.
Rhythm: Abdo is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.