Tillman sits next to 3 phonetic neighbors — Tillson, Tilden, and Dillman are the closest matches by sound. Most share Tillman's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one who tills the land, farmer"
"battle, fighter, combatant"
"god of justice"
"supplanter, one who follows at the heel"
"one who raids, bold adventurer"
"bright day"
"geographic name from ancient Gaulish"
"distinguished leader"
"sun"
"healer, to heal"
"legendary king of Phrygia, golden touch"
"divine water (Zoroastrian)"
"broad valley, wide hill"
"healer"
"lunar, bright as the moon"
"of Mars, god of war"
"descendant of Raghallach"
"command, edict, beautiful example"
"occupational name for a burner of coal or lime"
"brother (informal)"
"royal town or manor"
Similar sound: These names share phonetic patterns with Tillman — 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 Tillman.
Rhythm: Tillman is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.