Sander sits next to 4 phonetic neighbors — Alexander, Xander, and Sandro are the closest matches by sound. Most share Sander's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"defender of the people, protector of men"
"follower of Christ, Christian"
"born of laughter, joy"
"the greatest"
"to dwell, commander"
"wise and powerful"
"short form of Tobias"
"counsel warrior"
"he will laugh, he laughs"
"eagle, nobleman"
"strict, disciplined"
"lord of the estate, powerful at home"
"elevated, sublime, lofty"
"peace through daring"
"herald, messenger"
"occupational name for a burner of coal or lime"
"gift of Yahweh"
"father of peace"
"wise counsel and army, counseling warrior"
"will-helmet (determined guardian)"
Similar sound: These names share phonetic patterns with Sander — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Sander.
Rhythm: Sander is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.