Reathel sits next to 4 phonetic neighbors — Bethel, Rethel, and Rachel are the closest matches by sound. Most share Reathel's Hebrew (via American)-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"house of God (possible Bethel derivation)"
"field settlement"
"scholar"
"from Flanders, Flemish person"
"bright one, radiant"
"black and blue-green"
"old, wise ruler"
"glory of the homeland"
"Ford by the windy place; a river crossing in a breezy location"
Similar sound: These names share phonetic patterns with Reathel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew (via American) origins, giving them the same cultural heritage as Reathel.
Rhythm: Reathel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.