Lang sits next to 3 phonetic neighbors — Lance, Grant, and Frank are the closest matches by sound. Most share Lang's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"tall, long"
"victory of the people (via Nicolas root)"
"burning brand, sword"
"king, ruler, sovereign"
"From the city of Seville in southern Spain"
"rock, stone"
"royal, kingly"
Similar sound: These names share phonetic patterns with Lang — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Lang.
Rhythm: Lang is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.