Louberta sits next to 4 phonetic neighbors — Alberta, Roberta, and Louisette are the closest matches by sound. Most share Louberta's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"famous, bright warrior"
"peaceful ruler"
"renowned fighter"
"one who busts, tough person"
"pale green, fresh"
"inheritance, lot, portion"
"to fill to excess, satiate"
"from Troy by the waterfall"
"hot furnace (possible Latin root calida fornax)"
"peaceful ruler (from Frederika)"
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Similar sound: These names share phonetic patterns with Louberta — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Louberta.
Rhythm: Louberta is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.