Linden sits next to 4 phonetic neighbors — Lyndon, Landon, and Linton are the closest matches by sound. Most share Linden's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"linden tree, lime tree"
"invented name; possibly son of the fearless one"
"sun, lord"
"middle of the plain (city name)"
"greatest stream (via Maxwell)"
"beloved, dear one"
"defender of the army"
"variant of Lakin: small play, sport"
"oracle, mouth of brass"
"God has given, gift"
"heart, spirit"
"speed, power (modern association)"
"praised (from Judah/Yehuda)"
"steps over a fence or wall"
"father of peace"
"of the Vergilii clan, flourishing"
"one who observes, explorer"
"victory of the people"
"fox"
"fire of God"
"son of Evar; son of the boar"
Similar sound: These names share phonetic patterns with Linden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Linden.
Rhythm: Linden is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.