Keyner sits next to 4 phonetic neighbors — Kayner, Keiner, and Kaiser are the closest matches by sound. Most share Keyner's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"possibly skilled one or from Kaiser emperor"
"fur trapper, frontiersman"
"noble, superior"
"invented: jay bird + fair (vin)"
"raider, warrior"
"maker, creator"
"things to be read"
"one who carries the anointed"
"son of the red-haired one"
"coal town; settlement by the coal"
"from the rock (place surname variant)"
"great, kingly"
"mind, intellect, spirit"
"to make merry, celebrate boisterously"
"descendant of Bladen"
"friends, allies"
"descendant of Creadan"
"wild boar hunter"
"noble and ready"
"steep meadow or woodland clearing"
"invented or unknown"
Similar sound: These names share phonetic patterns with Keyner — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have German origins, giving them the same cultural heritage as Keyner.
Rhythm: Keyner is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.