Holland sits next to 4 phonetic neighbors — Roland, Harland, and Holden are the closest matches by sound. Most share Holland's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"wooded land"
"youthful"
"broad valley"
"brave lion, lion-hearted"
"cellar keeper, wine steward"
"noise, tumult"
"Yahweh saves"
"continuous improvement (kaizen-inspired)"
"flowing down (from Jordan)"
"God heals"
"God has given, gift of God"
"noble elder"
"God is gracious"
"defender of the army"
"descendant of the courageous one"
"from the bailey (castle wall)"
"growth, abundance, increase"
"aster flower, purple"
"owner, possessor"
"strong as an oak"
"invented name; possibly son of the fearless one"
Similar sound: These names share phonetic patterns with Holland — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Dutch origins, giving them the same cultural heritage as Holland.
Rhythm: Holland is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.