I went through way too many cases trying to find one that’s very slim and has a decently grippy texture. Aramid fiber (Kevlar) turned out to be perfect. I’m currently using this Pitaka case and love it. It’s a mere 0.65mm thick. The iPhone 15 ones seem to be thicker and more robust at 0.95mm, but they have the same case shape and grip.
You can really spend $1700 for an iMac or $1800 for a MacBook Pro that come with only 8GB RAM in their base configurations. C’mon.