Tiago sits next to 4 phonetic neighbors — Diego, Santiago, and Thiago are the closest matches by sound. Most share Tiago's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"supplanter (from Jacob/James)"
"old, wise, of noble birth"
"sun"
"he shines"
"blessed"
"new house (place name)"
"God is my salvation"
"gift of God"
"bright"
"loved by God"
"God is my strength"
"cross"
"born at dawn, bringer of light"
"bear strength"
"bearer of Christ"
"God is gracious"
"peaceful ruler"
"reborn, born again"
"supplanter, he who follows at the heel"
Similar sound: These names share phonetic patterns with Tiago — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Latin origins, giving them the same cultural heritage as Tiago.
Rhythm: Tiago is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.