I sometimes listened to 99.7 as a kid in the early 2000s (approx. 4th-7th grades). For music on car rides my parents would only let us listen to KDFC, KBAY, KOIT, or KFRC. Of course behind their backs I usually listened to Radio Disney (4th-5th grades) and later Wild 94.9 and 106 KMEL (6th-8th).
Off of memory these are parts of the essential oldies repertoire I'd learned about through KFRC:
"Get Ready" by The Temptations
"Joy to the World" by Three Dog Night (I think I heard both the above songs on the same trip to San Francisco in December '03)
"Sugar Pie Honey Bunch" by The Four Tops
"My Girl" by The Temptations
"This Old Heart of Mine" by Isley Brothers
"Jumpin' Jack Flash" by the Rolling Stones
"(I Can't Get No) Satisfaction" by the Stones
"Ticket to Ride" by the Beatles (
Let It Be was one of the few popular albums my immigrant parents owned - it was in vinyl too!)
"Mr. Tambourine Man" by The Byrds
"No Time" by the Guess Who
(I was about say "essential American oldies", but left out "American" out of respect for the British and Canadian bands listed.)
I think around 2015 or '16 did I start going deeper in '60s and '70s music, probably because I felt dissatisfied with a lot of current hits by then, and had become interested in many of the original songs sampled by rappers.
And from the Internet Archive, here is KFRC's "
Top 997 Oldies of All Time" list from 2004.