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"
"from Germany"
"blue-purple dye, the color indigo"
"qualitative time, the fullness of time"
"from the town, settlement"
"son of the fortunate one"
"western town, western settlement"
"courageous, valiant"
"headland, promontory"
"little bear, bear cub"
"leader, sovereign"
"messenger of God"
"little dark one"
"jaybird + euphonic suffix"
"related to Thor (thunder)"
"the Persian"
"chain link, connection"
"my rock is God"
"descendant of the black-haired one"
"high settlement or estate"
"hawk-like"
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.