Don’t know if this is covered in another thread, but:

Susan Oliver (Betty’s cousin from “Gurrrney”)
Star Trek Pilot “The Cage”

Elinor Donahue “Metamorphosis”
https://youtu.be/aFaqmX7EAfY

& Jane Wyatt was Amanda Grayson, Mr. Spock’s mother on both
the television series & the motion pictures.
https://www.startrek.com/article/amanda-grayson-is-treks-greatest-mom