I haven't listened to KGHP in several years, but I will have to again soon. Their playlist was very freeform last time I heard them earlier this decade. They didn't make it to home, i.e. the old Bothell or Monroe locations, but I could get them in the Hood Canal area where our family stayed in a friend's cabin a few times...
Big playlists just don't happen around this part of WA. KOZI-93.5 Chelan is probably the closest example. I can get a fuzzy signal in one particular part of my Central apartment. That Adult Contemporary station plays songs that you'll rarely or never hear on KSWD/KRWM. Lot of older stuff too, 1970s and even late '60s. 'Another Sad Love Song' by Toni Braxton, 'Song Sung Blue' by Neil Diamond and 'After All' by Cher and Peter Cetera were spun in the last hour. Former longtime KING-TV announcer Joe Michaels is still doing IDs for KOZI Community Radio, and I get a kick out of that!
They also do long-form local news weekdays at 5PM, and an interview/tradio show called 2nd Cup of Coffee weekday mornings. I'd call it a Full Service station.
Outside of WA, I've always been impressed by KKRB in Klamath Falls and their massive Adult Contemporary library, along with a new one to the 'freeform playlist' list, KJAN-AM Atlantic IA. Hey, it's 'where your friends are,' and where oh wow's are heard just about every minute of the day. Recently listened and heard Johnny Mathis' rendition of the classic Skyliners hit 'Since I Don't Have You' along with a 1972 song called 'I Believe in Music' by the soft rock band Gallery.
As for college radio, at least at KCWU Ellensburg it's mostly a CHR/Top 40 jukebox. Occasionally there will be a CWU student doing a shift, but most of the time there are support announcements for local businesses in between the greatest hits from Ariana Grande, Shawn Mendes and Chance the Rapper. On Friday nights they have dance and electronica music for several hours. I wish they would be more freeform, but that's probably KCWU's decision.
I remember KASB Bellevue also had a similar format when I was living there.