Theodoros sits next to 4 phonetic neighbors — Theodore, Theodor, and Theodoros are the closest matches by sound. Most share Theodoros's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gift of God"
"third"
"victory of the people"
"messenger of the gods"
"from Sebastos (venerable city)"
"godly, divine"
"one who sets things right"
"the unseen"
"one who carries Christ within"
"of the earth mother"
"king, ruler"
"YHWH has shown favor"
"of the earth"
"earth mother follower"
Similar sound: These names share phonetic patterns with Theodoros — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Theodoros.
Rhythm: Theodoros is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.