Robbie sits next to 3 phonetic neighbors — Bobby, Robby, and Robin are the closest matches by sound. Most share Robbie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright fame"
"of the moon, lunar"
"flower, flourishing"
"blessed one"
"Broken land, marshy area"
"huntsman, game warden"
"cross, the cross of Christ"
"Yahweh has shown favor"
"descendant of the hound of valor"
"firebrand meadow, sword clearing"
"step, stride"
"place name: from Kelton"
"God saves"
"guardian of prosperity"
"of Jove (Jupiter), sky father"
"salmon, descendant of the salmon"
"archer, bow-wielder"
"little seal"
"place by a waterway lock"
"crooked nose"
Similar sound: These names share phonetic patterns with Robbie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old High German origins, giving them the same cultural heritage as Robbie.
Rhythm: Robbie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.