Hello!
I have three recommendations based on size. Some of which have direct USB C to USB C connections while others require a USB C to HDMI/DisplayPort or similar adapter cable which can be easily found on Amazon.
The first recommendation is the LG Ultrafine 4K Display. This was developed hand in hand with Apple and features a direct USB C to USB C connection that charges your computer while connected. It is also is deeply integrated with the macOS Software which allows you to control brightness and other settings from the display settings on your Mac. Check it out below:
LG UltraFine 4k Display: https://www.apple.com/shop/product/HMUA2VC/A/lg-ultrafine-4k-display?fnode=e87b43f7877cf6b66163061616ab096eb0f0df0f7f27a382d160eea5ae6de9e8821884885648c1436edd40667a55615151b9dcb9823f3a79a4d6adc607b71d9348bb63acdbb4020d591e480df2b9ce145fd9100b767c4b093018529df396b9a7
The other recommendations are dell monitors. The are both similar in that they are 4K displays and have similar if not the same color profiles. The big difference between them is size. (24inch or 32inch). In general, Dell makes great displays. I currently use the Dell 24 Ultra HD 4K display. You can search their site if you are looking for different sizes.
Dell 24 Ultra HD 4K Monitor | P2415Q: https://www.dell.com/en-us/shop/dell-24-ultra-hd-4k-monitor-p2415q/apd/210-agnk/monitors-monitor-accessories
Dell UltraSharp 32 4K USB-C Monitor: U3219Q: https://www.dell.com/en-us/shop/dell-ultrasharp-32-4k-usb-c-monitor-u3219q/apd/210-aqzz/monitors-monitor-accessories
All of these monitors feature built in USB C hubs. The Dell displays feature the ability for multiple inputs and some audio output options.
Let me know if this helps or if you have further questions!