Courtesy of the Charlie's Angels subreddit (https://www.reddit.com/r/CharliesAngels/comments/kzsbzo/chilling_parallels_between_shannen_dohertys_prue/):

Prue (https://charmed.fandom.com/wiki/Prue_Halliwell) and Sabrina (https://charliesangels.fandom.com/wiki/Sabrina_Duncan) are the most intelligent of their group and not just book smarts but general brains period.

They are the leader of their trio

Their characters leave somewhere around half the show

Never appeared again after exit, not even as a guest...........