AGON PRO AG344UXM

I can second this, it is great because of all the reasons he mentioned and a true HDR experience. The screen gets up to 1300 nits, good local dimming with 1100 zones and reasonable blooming. Fast respons and great colors are awesome as well.

I have AOC Agon Pro AG344UXM, IPS miniLED monitor and it's awesome. It's 3440x1440 170Hz, HDR1000. It does have KVM (you can connect your mouse / keyboard to the monitor and switch them together with input), it also offers high power charging through USB-C.

34". All the way. We have had AOC x 2 with zero issues, great monitor. My lad is currently on an LG 34" which seems to be fine, little bit of bleed. My daughter is also on a 34" Viewsonic, i'm on a 49" uw. My two main gaming buds are also 34". Both with 3060s. For gaming, gotta be 34" curved, it's a beautiful thing. Imo, i would stay away from nzxt myself.

Having the same usage as you, i have a AOC 34" Ultra wide, and i'm thinking to go for a 32" 4K specially because of the height resolution.

Ultrawide and FFXIV is amazing, works really well. I use a 3440x1440 AOC monitor at home. Only downside is the cutscenes. I would suggest that you move the monitor futher back on your table. At the moment it looks like it is to close to you.