Hakan sits next to 4 phonetic neighbors — Hagen, Hakon, and Hector are the closest matches by sound. Most share Hakan's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"emperor, supreme ruler"
"victory of the people"
"the world, earthly realm"
"wolf with a shield"
"one worthy of praise"
"goodness, blessing, welfare"
"elevated terrain, mountain land"
"lord of the moon"
"joyful as the moon"
"home ruler, ruler of the estate"
"son of Mads (Matthew)"
"little deer"
"messenger goddess"
"the loud one, the screamer"
"baby of the houbara bustard"
"prince, noble ruler"
"strong, healthy"
"brave chief, young hero"
"trail left in water"
Similar sound: These names share phonetic patterns with Hakan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Turkic (Kagan) origins, giving them the same cultural heritage as Hakan.
Rhythm: Hakan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.