Ryerson sits next to 4 phonetic neighbors — Ryerson, Emerson, and Anderson are the closest matches by sound. Most share Ryerson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Ryer, from the rye field settlement"
"enlightened, bright, clear"
"white hawk or modern creation"
"hill covered with broom, steep hill"
"hay valley, from the hedged valley"
"goodness"
"possibly king/blessed (phonetic associations)"
"dark red, crimson"
"son of Jens (son of John)"
"from Texas"
"ox (original pictographic meaning)"
"possessing goodness; gift"
"blue crested bird"
"running (speed)"
"modern nature compound name"
"alive, full of life"
"great happiness, delight"
"venerable, worthy of reverence"
"river, river that swallows rivers"
"little king"
Similar sound: These names share phonetic patterns with Ryerson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Dutch/English origins, giving them the same cultural heritage as Ryerson.
Rhythm: Ryerson is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.