There is no specific compatibility list for Thunderbolt 3 or 4 monitors from Apple. However, monitors with Thunderbolt 3 or 4 are usually compatible with Macs that support Thunderbolt 4, such as the Mac Studio. The BenQ PD3220U Graphics Monitor could work as long as it has a Thunderbolt 3 or 4 port. It is advisable to check the specifications of the monitor and make sure it is compatible with the Mac Studio.
Hi Francs, I do have a Care for this Studio - but I still had to drive 90 km to the store in Frankfurt 4 times because they didn't want to give me a replacement device under warranty, but insisted on repair = replacement of the defective circuit board. This took another 7 weeks and was the low point of my Apple experience. (Especially with the Studio, this was the only way to go...)