Tully sits next to 5 phonetic neighbors — Molly, Dolly, and Lily are the closest matches by sound. Most share Tully's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"people mighty, powerful nation"
"little sky, of the heavens"
"narrow channel, strait"
"diminutive of Cornelia (horn, strength)"
"from the hills, hill settlement (Bray) combined with -lin (diminutive)"
"without wax (unadulterated)"
"star, starry sky"
"variant of Twyla, meaning woven"
"princess, noble"
"where roses grow, island of roses"
"pure white (as Candace)"
"dedicated to Mars"
"fidelity, eternal life"
"Scandinavian contracted form of Elizabeth"
"to possess, acquire"
"gift of God"
"rich, powerful"
"of the homeland"
"flower, brightness"
"life"
Similar sound: These names share phonetic patterns with Tully — 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 Tully.
Rhythm: Tully is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.