That is a good question. I listened to the Q101 live stream for about a half hour, and all of the songs that I heard are classic alternative songs.
3:34 pm - "Bittersweet Symphony" (Radio Edit) - The Verve
3:38 pm - "Gone Away" - The Offspring
3:42 pm - "Don't Speak" - No Doubt
3:46 pm - "One Step Closer" - Linkin Park
3:49 pm - (commercial break)
3:50 pm - "Intergalactic" - Beastie Boys
3:53 pm - "A Girl Like You" - The Smithereens
3:58 pm - "Hate Me" - Blue October
4:02 pm - "Hey Man, Nice Shot" - Filter
4:07 pm - "The One" - Foo Fighters
The playlist above is likely from the online-only version of Q101:
https://q101.com/
and
Q101 playlist + Listen Live link.
The Cumulus radio station at
https://www.101wkqx.com/
and
101WKQX On Air Playlist had this playlist for the same time period
on Monday 4/18/2022 - 3:34 PM to 4:08 PM CT:
Somewhere I Belong - LINKIN PARK - 4:08 PM
Creep - Radiohead - 4:04 PM
Enemy - Imagine Dragons - 4:01 PM
Habits - Tove Lo - 3:57 PM
Seven Nation Army - The White Stripes - 3:53 PM
My Love - Florence + The Machine - 3:50 PM
She - Green Day - 3:48 PM
Heat Waves - Glass Animals - 3:37 PM
Skin and Bones - Cage the Elephant - 3:34 PM
*****
It is no wonder why Cumulus wanted to get back the intellectual property - eliminate the competition and the confusion over the "Q101" branding which sent some people over to the online-only site instead of its own station site.