Customizing Windows File Context Menu?

Hi! I'm familiar with the Windows Registry and can add file types but am not familiar enough to do this task. I want to customize different file classes' context menu in Exploer. I wan to move options I need only occasionally or not at all to a submenu and options I use a lot to the main menu. I also want an easier way to add file classes to the Registry. I'm using several versions of Windows, and they include Win98SE, Win7/64 and Win11/64. BTW, I could use more information on the Registry entries, as my knowledge of such is limited, and I keep having to reference already-established entries to help me out.