Something else I’ve noticed with AC: more AC’s than not have always been light with currents, but more AC’s have dialed down their currents even more, likely as a result of the “new music” drought at CHR. For a song to do well on AC, it has to be a CHR hit first generally (this has increasingly been the case over the last couple of decades). AC hasn’t had a great track record of producing its own hits for a while.
My local AC’s (WSPA-FM) newest songs getting the highest rotation are still “Stay”, “Flowers”, “Anti-Hero”, and “Bad Habits” getting around 25-28 spins per week. They used to have a “power” rotation of 5 currents at about 30-35 spins per week that was updated quite often until a year or two ago.
Musically, the playlist is 80s and 00s/10s tracks (way more 10s than 00s). 1-2 90s per hour and still a handful of 70s hanging around. If we shift back just a decade, the station wasn’t playing 60s music, and not nearly as many 70s songs as they are 80s now. 90s have decreased. The longer time goes on, the slower stations have evolved the age of the music they play.
When it comes to 90s tracks, there are tons of songs that were hits on AC in the 90s, but the issue is the 90s hits or Elton John, Celine Dion, and company were hits with the AC target demo back then - meaning those listeners have long aged out of the format. That leaves AC trying to cobble together well testing ballads, rock acts like Alanis, Goo Goo Dolls, MB20, etc, and even some dance tracks like “What Is Love” and the Nikki French version of “Total Eclipse of the Heart” for 90s material.