Forster sits next to 4 phonetic neighbors — Foster, Forrest, and Porter are the closest matches by sound. Most share Forster's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"forester, keeper of the forest"
"Herd farm or livestock enclosure"
"great, venerable"
"wide-ranging, expansive"
"bold counsel"
"healing, wholesome"
"wolf"
"meadow by the bow or bend"
"from the hill by the loud river"
"angel, divine messenger"
"initials used as a standalone given name"
"surname of English origin, possibly place or occupational"
Similar sound: These names share phonetic patterns with Forster — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Middle English origins, giving them the same cultural heritage as Forster.
Rhythm: Forster is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.