So in pre M1 and Touch ID days, one could plug any Apple keyboard into any one of the laptop or desktop USB-A ports and continue, no hiccups. So instead of being able to reuse my perfectly operational "mature" Apple keyboards on the new MacBook USB-C only laptops, I now get to pay Apple $199 plus tax for a Touch ID keyboard (less my 10% military discount). As far as I know, that is the only game in town with Touch ID. Fortunately, the Mac M1 Studio (both models) have two USB-A ports, one for my legacy Apple keyboard and one for my legacy Apple CD/DVD player. (yes I still have my music sources on CDs)
The only other option that comes to mind, I have yet to find a Thunderbolt 4 hub that supports dual 5K (for Apple Studio Displays) or 6K for other brand monitors. I only see the current Hub equipment handling multiple 4K or single up to 8K displays.
The 2021 MBPros have three Thunderbolt ports. I will have to use two for the Studio displays and the last one goes to a hub for the rest of the stop. Thankfully, the power has it's own plug.