Monitors for Graphic Design/Best Monitor Specs

I’m a graphic designer who works from home and I have an ancient monitor with a 60 hz refresh rate. I’m pretty sure that’s not helping my migraines so I’m looking to get something with a higher refresh rate to help with the flicker. I don’t think an EyeCare monitor is a great pick for me because of my job, but ideally I’d love the ability to set custom brightness profiles so I can toggle between “working at vampire light levels” and “checking color fidelity”. My current monitor lets you set one custom profile.

From what I’m seeing online getting at least a 70 hz refresh rate can help with migraines. Are there any other specs I should pay attention to as I shop?