Which mount do you have? I've got a 24" as well and I've never imagined I'd fit 2 monitors.

Herman Miller's Jarvis [1]. I'm probably paying up for the brand, but I got it installed a few years ago (with the nano-textured Studio display), and it works beautifully.

[1] https://store.hermanmiller.com/home-desk-accessories/jarvis-...