Lliam sits next to 3 phonetic neighbors — Liam, William, and Lliam are the closest matches by sound. Most share Lliam's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Resolute protection; will-helmet"
"independent, nonconformist"
"sea, ocean"
"place of elms"
"farm on the ridge"
"song; nightingale"
"spear ruler"
"who is blessed"
"noble protector"
"arhat, enlightened Buddhist monk"
"enduring, steadfast"
"ruling"
"farm on stony ground"
"at the mountain"
"son of the home ruler"
"high, exalted"
"from the rock (place surname variant)"
"from the high place"
"valley"
"natural, undomesticated"
Similar sound: These names share phonetic patterns with Lliam — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic (via William) origins, giving them the same cultural heritage as Lliam.
Rhythm: Lliam is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.