Bastion sits next to 4 phonetic neighbors — Sebastian, Bastian, and Fabian are the closest matches by sound. Most share Bastion's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"venerable, worthy of reverence"
"from Arles (city in France)"
"honoring God"
"his name is God"
"from 'deaglán', possibly 'good man'"
"small songbird, finch"
"greatest conqueror"
"prosperous friend"
"wheel maker, cartwright"
"lotus flower, love"
"ridge settlement"
"servant, messenger"
"maker, creator"
"colt settlement; farm where young horses are kept"
"spear warrior"
"from the rocky settlement"
"valley"
"one who follows"
"from the rock (place surname variant)"
Similar sound: These names share phonetic patterns with Bastion — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Bastion.
Rhythm: Bastion is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.