I used a XBOX One S with this one https://pcpartpicker.com/product/yRdFf7/samsung-lc32hg70qqnxza-490-3840x1080-144hz-monitor-lc32hg70qqnxza
It has 1Ms and it's curved and 1440P and HDR and 10Bits, 144hz with LED too..
It would run at 4K/30fps or 1440P/30FPS to 1080P/60FPS and it would be HDR compatible because of the freesync...
The experience was amazing (Sold my XBOX),
but I assume that with the monitor I mentioned the only games that would work would be the XBOX one X versions and with that it would be 4k/60 and 1440P/60 or maybe more? 1080P/60 or or maybe more?
From what I read... there was a recent update that now push for higher refresh rate. Here are the info's
But it depends also on the monitor, because some monitors like the one I posted only allow 144hz through DP and not HDMI.
but maybe with an HDMI 2.1 you can push 4k or 1440P (or upscaled to 4k) at 120fps..