Petros sits next to 5 phonetic neighbors — Peter, Pietro, and Piers are the closest matches by sound. Most share Petros's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rock, stone"
"male, manly"
"victory of the people"
"the hidden one, lady"
"of Mars, warlike"
"firmness, constancy"
"gift of God"
"well-pleasing, excellent"
"22nd letter of the Greek alphabet"
"forethought, foresight"
"strife, discord"
"lord of waters"
"crown, garland, wreath of honor"
"devoted to Demeter"
Similar sound: These names share phonetic patterns with Petros — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Petros.
Rhythm: Petros is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.