Hendrick sits next to 4 phonetic neighbors — Henrik, Hendrik, and Henry are the closest matches by sound. Most share Hendrick's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ruler of the home"
"eagle power, eagle ruler"
"to close, knot"
"hollow land (alternative)"
"short form of Kipling or Christopher"
"archer, yew-wood man"
"cellar keeper, wine steward"
"ruler of the people"
"God is gracious"
"greatest stream (via Maxwell)"
"priceless, praiseworthy"
"alder tree"
"rowan tree"
"wealthy guardian"
"protector of mankind"
"father of peace"
"famous army, warrior people"
"wolf path, the way of the wolf"
"soaring vessel, sky wanderer (symbolic)"
Similar sound: These names share phonetic patterns with Hendrick — 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 Hendrick.
Rhythm: Hendrick is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.