Irelia sits next to 4 phonetic neighbors — Aurelia, Amelia, and Ophelia are the closest matches by sound. Most share Irelia's Fictional / League of Legends-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blade dancer, will of the blades"
"father's joy"
"joyful singer"
"from the alder grove"
"knowledge gained by inquiry"
"God is my strength"
"warlike, strong"
"supplanter (inherited from James)"
"of the Julii family (related to Julius Caesar)"
"beautiful, lovely"
"the road, the passage"
"brand name used as given name"
"gracious, devoted wife of the gods"
"beautiful fairy"
"power, work, vigor"
"counsel, wise decision"
"female heir, inheritor"
"honesty plant (botanical genus)"
"love, my love"
"of the race of women"
"from the town, settlement dweller"
Similar sound: These names share phonetic patterns with Irelia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Fictional / League of Legends origins, giving them the same cultural heritage as Irelia.
Rhythm: Irelia is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.