Keith sits next to 3 phonetic neighbors — Keats, Heath, and Reef are the closest matches by sound. Most share Keith's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"wood, forest"
"one who brings news"
"meadow, woodland clearing"
"dweller near the heath"
"son of Cole"
"companion, fellow traveler"
"gift from God"
"healer (from Greek Jason)"
"oak grove, great"
"wild goat (ibex)"
"Yahweh remembers"
"supplanter"
"gift of God, gift of Yahweh"
"valley, hollow"
"God the highest (variant interpretation)"
"the ram"
"battle chieftain (Cerdic interpretation)"
"one who crafts arrows"
"son of Otto"
"chief desire"
"peddler, pack-horse driver"
Similar sound: These names share phonetic patterns with Keith — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic origins, giving them the same cultural heritage as Keith.
Rhythm: Keith is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.