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"
"elevated, sublime, lofty"
"daylight, daytime"
"fire brand, flaming sword"
"born of laughter, joy"
"my father is peace"
"wise and powerful"
"Thor's stone"
"will-helmet (determined guardian)"
"descendant of the earl"
"short form of Tobias"
"surname-derived given name"
"ruler of the home, home power"
"happy, fortunate"
"herald, messenger"
"wealthy, prosperous"
"counsel warrior"
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.