Excel sits next to 4 phonetic neighbors — Axel, Excell, and Excel are the closest matches by sound. Most share Excel's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"excellence, superior quality"
"forester, keeper of the forest"
"Courteous, polite, of the court"
"surname of English origin, possibly place or occupational"
"modern invented name, unknown etymology"
"ardent friend, eager companion"
"wide, broad"
"Farm or dwelling for a herd of animals"
"great, venerable"
"hill, mound, burial tumulus"
"brave advisor"
"healing, wholesome"
"from the hill by the loud river"
"happy, fortunate"
Similar sound: These names share phonetic patterns with Excel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Excel.
Rhythm: Excel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.