Teegan sits next to 4 phonetic neighbors — Teagan, Tegan, and Reagan are the closest matches by sound. Most share Teegan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little poet; philosopher"
"ruler of the people"
"barberry tree hill"
"horse keeper, stable master"
"uncertain; possibly Romani personal name with regional meaning"
"son of Myer/Meyer"
"battle, round barrel"
"fast sailing vessel"
"valley of the River Kent"
"little king"
"defender of men"
"remembered by Yahweh"
"creative American original"
"bright fame"
"diamond"
"narrow strait, channel"
"bearer of Christ, Christ-carrier"
"supplanter"
"son of the eternal king"
"son of Rip (surname derivative)"
"holder of the heel, supplanter"
Similar sound: These names share phonetic patterns with Teegan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish/Gaelic origins, giving them the same cultural heritage as Teegan.
Rhythm: Teegan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.