If it's a band of that era, maybe more like Suede? I thought Autofiction sounded okay and their 2010s is better than some of the bands of that ilk. I'd struggle to believe after the bit of a backlash initially to the headliners this time, it would be a full on 90s band of blokes but Suede + some more diverse headliners would be enjoyable to me.
I think I'm imagining something more like Osees / Courtney Barnett / Idles / First Aid Kit / Wolf Alice / Alvvays if they're touring at that time or whatever compared to my slightly more, my ideal of
Young Fathers/ Little Simz/ Loyle Carner for one then Big Thief, Sufjan, PJ Harvey, Pavement, LCD, Beach House, Sigur Ros, Mitski whoever as other options where a couple are probably too big!