Yet another option is to put AutoCorrect Options on your QAT and then use Word's Alt-key ribbon access keys to reach it from the keyboard. This is a bit trickier.
Modifying the Quick Access Toolbar (QAT) in Microsoft Word
Here is my current QAT:
The AutoCorrect Options is the lightning in a rectangle icon (default) in the tenth position.
When I press the A key - letters and numbers representing items on the Ribbon and QAT appear.
l can click that icon (button) with Alt, 09. (The comma indicates releasing the Alt key.) That gives the same five-tab dialog that I would get by going to File > Options > Proofing > AutoCorrect Options and includes the AutoFormat As You Type options. You can click anything on the current ribbon or QAT with this procedure.
Unlike the standard keyboard shortcuts, these change any time a change is made to the Ribbon or QAT. Microsoft has been very free in making such changes so you need to pay some attention to what shows up after you press the Alt key.
This full dialog can be added to the QAT but not addressed by keyboard shortcut modification because there are somewhat different "all command" lists available when modifying the QAT than are available when assigning keyboard shortcuts.