Taeko sits next to 4 phonetic neighbors — Naeko, Kaeko, and Saeko are the closest matches by sound. Most share Taeko's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"child of abundant grace"
"bitter, beloved"
"settlement in the valley, valley town"
"garland, wreath of victory"
"spear ruler, noble one"
"strong"
"bright one, radiant"
"dove, peaceful one"
"victorious one"
"famous"
"dark one, descendant of Dubhthach"
"truth (from Alethea root)"
"the bitter one"
"victory of the people"
"famous warrior (from Germanic Ludwig roots)"
Similar sound: These names share phonetic patterns with Taeko — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese 多恵子 origins, giving them the same cultural heritage as Taeko.
Rhythm: Taeko is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.