Markel sits next to 3 phonetic neighbors — Marcel, Marcus, and Markell are the closest matches by sound. Most share Markel's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Mars, warlike"
"God saves, salvation (Hebrew Hoshea)"
"young warrior"
"large homestead, settlement (via Trevor)"
"winner, victorious fighter"
"departure, going out"
"wounded in the thigh"
"God has heard"
"garden of God, orchard"
"strength, my strength"
"modern invented compound name"
"thunder"
"battle-ready, martial spirit"
"to shout for joy, to sing"
"oak trees, oak grove"
"horseman, cavalryman"
"tree, oak tree"
"blessed one"
"of divine origin"
"rock (from city of Tyre)"
"follower of Christ, anointed one"
Similar sound: These names share phonetic patterns with Markel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Markel.
Rhythm: Markel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.