If a monitor only gives you the choice between, say, HDMI 2.0 and DisplayPort 1.2, HDMI could be the way to go for HDR support, as long as all your devices support the HDMI version.
For most setups and components, we recommend this Amazon Basics 48Gbps ... want to make sure that the HDMI cable you buy has the correct size connectors. Most TVs, monitors, game consoles ...
One often overlooked consideration when choosing your PC monitor is the ports that come with it. The two primary standards are HDMI and DisplayPort, which offer different features and capabilities.
Want a little (or a lot) more screen real estate when you're on the go? A portable USB-C monitor is the answer, and the best one I've tested is cheap, too.