If your budget is under US$1,000, PD3200U is a good choice as its 4K IPS panel covers 100% Rec.709 and sRGB color space, and also supports other features for designers' works. If you don't mind spending a little more, their latest PD3220U (also 4K IPS panel) covers 100% sRGB and 95% Display P3 color space and supports HDR10 and thunderbolt 3 daisy chain technology for dual monitor. If you have time, go visit their websites for more reviews and specs comparison. In my understanding, most widescreens are for gaming monitors, and not very often to see them in photography/designer monitors, but I could be wrong. Hope you get the monitor that you need. Cheers!
https://www.benq.com/en-us/monitor/designer/pd3200u/reviews.html#expert
https://www.benq.com/en-us/monitor/designer/pd3220u/reviews.html
https://www.benq.com/en-us/monitor/designer.html