Basically, the popularity of soaps seems to base on how many episodes I've found on VHS at local estate sales. So far, Days of Our Lives is the leader. I have found more episodes of Days taped off KNDO, than other soaps from the other stations. I have a 1987 episode where KNDO does a local promo - 'stay tuned for Yakima's number one daytime drama, Days of Our Lives...' Very occasionally I've found Another World or Passions. I've found five KNDO-taped episodes of AW (partial or full) including a couple July 1981 clips!
Next is Guiding Light, followed by ATWT and Y&R (KIMA of course). Most of my ABC soaps besides a few full All My Children's (and a few partial), one full One Life to Live, and two General Hospital's, came from out-of-market affiliates and not KAPP. Loving was cleared here for a while in the '80s but not in the early '90s, I've never found any episodes taped locally or otherwise. Port Charles has only been found from out-of-market lots (specifically, 1998 episodes taped off KXLY). Nothing from The City. Also nothing from the NBC Search for Tomorrow, Ryan's Hope on ABC, Capitol on CBS. All three were cleared here in the mid '80s.