Any name brand monitor that accepts HDMI, or DisplayPort or miniDP should be fine. Thunderbolt 3 or usb-c native monitors should also be fine, they’re just less common. Any cables or adapters you may need are readily available online as well.
I have a pair of Dell U2715H monitors (27”, 2560x1440) connected to my 2018 Mac mini using a pair of cables I got on Amazon that go directly from the monitors DisplayPort input port to the mini’s Thunderbolt 3 ports. My other monitor is a 32” Samsung (also 2560x1440) that connects fine to the mini via those same cables or HDMI.
Of course, other monitor brands and resolutions will also work fine but I only have those three in my house to speak about directly. I am also using a Logitech C925e as a FaceTime and MS Teams webcam with it, along with a usb Samson Go mic so I don’t have to use a headset. My keyboard is a Logitech 750 solar wireless and a Logitech wireless mouse connected by the Logitech USB universal connector/dongle.
Peripherals by and large should not be an issue, and if you see a monitor or something else you’d like to use, check the web for reviews using it with Mac OS on a T2 chip Mac, or post here and ask others if they’ve used that make or model of peripheral.