Wilkie sits next to 3 phonetic neighbors — Billie, Millie, and Kelsey are the closest matches by sound. Most share Wilkie's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"resolute protector"
"little Ireland (historical settlement)"
"faithful, honest, genuine"
"dark challenger, from the black cliff"
"from the alder grove clearing"
"from Venice"
"noble hill; Ella hill"
"bright sea"
Similar sound: These names share phonetic patterns with Wilkie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old High German origins, giving them the same cultural heritage as Wilkie.
Rhythm: Wilkie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.