Teegan sits next to 5 phonetic neighbors — Tegan, Reagan, and Keegan 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
"beautiful, lovely"
"beautiful, all (Ella) + rose flower (Rose)"
"who is like God?"
"myrrh, sweet resin"
"something precious and greatly valued"
"captivating, snare"
"elf friend, beloved elf"
"red-haired, reddish-brown"
"Saint Botolph's town"
"beloved, dear one"
"relating to the lyre, musical, lyrical"
"noble, bright"
"highest order angel"
"peace (from Irene element)"
"snow, frozen precipitation"
"grace, favor"
"hazel tree, nut-bearing shrub"
"poetry, motto"
"lake, waterfall (from Welsh -lynn)"
"to speak kindly, to order"
Similar sound: These names share phonetic patterns with Teegan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh 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.