Nicoll sits next to 4 phonetic neighbors — Nicole, Nikki, and Nicola are the closest matches by sound. Most share Nicoll's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"victory of the people"
"grace, favor"
"from Britain, of the British Isles"
"covered with mist, foggy"
"rich, wealthy"
"admirable, hawk-like"
"little dear one of the plain"
"friend, fair one"
"yew tree"
"brave warrior, strong as stone"
"violet flower (Yolanda influence)"
Similar sound: These names share phonetic patterns with Nicoll — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Nicoll.
Rhythm: Nicoll is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.