A curiousity I'd like not to elaborate on.

I'm a very curious person when it comes to tech. I have an idea in my head I want to play with and a big part of that is figuring it out for myself. I'm currently searching online for answers but considering this is a pretty uninteresting thing I need to work out in order to go further, I figured I'd pair my efforts up with all of your collective knowledge. Does anyone know what drivers are loaded in Advanced Startup Options for Windows 11? Specifically, the Command Prompt part of it, if more or different drivers load once you navigate there. Does anyone know where the computer decides which drivers are loaded?

Depending on which option you choose, it is pre-set in the operating system what drivers load. As far as I know there's no way to 'pick and choose' And yes you have access to command prompt.
I believe if you enable boot logging you can see the individual drivers that are loaded.

Execute below command from Windows Recovery Environment to list all loaded drivers.