If you're thinking about an external display and accessories for the m1 mac, then I discuss a few cables you need for your setup. In this review of the M1 Mac Mini and M1 Macbook Air, I discuss the accessories that will help you get the settings the M1 is capable of so that you can get the best performance out of your setup.
I also wanted to follow up on a recent (short) video where I talked about the refresh rates with the different connections with USB-C, HDMI and DisplayPort. With additional testing and adjustments on my monitor I did observe and increase in the refresh rate over HDMI.
I ran a few tests both on the M1 mini and the Macbook Air and was able to get the same results when it came to the cables I used to connect to the external display.