Xailynn sits next to 5 phonetic neighbors — Kaylynn, Jaylynn, and Zaylin are the closest matches by sound. Most share Xailynn's Welsh via American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lake, waterfall (from Welsh -lynn component)"
"modern combination name"
"invented name combining La- (the) with -viah (echoing Hebrew -iah, ..."
"kiss"
"from Elysium, heavenly"
"sovereignty, rule"
"from the broad town"
"Her Majesty — a royal title indicating supreme authority and dignity"
"grace, favor"
Similar sound: These names share phonetic patterns with Xailynn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh via American English origins, giving them the same cultural heritage as Xailynn.
Rhythm: Xailynn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.