I look at the autocategorization list and the groups and categories there make sense. However, it looks like I have to individually create categories and groups that match those, and then associate each one. It would be great to click a button that says "Create categories that match these", and then be able to click another button that says "Suggest matching categories for these items" or similar.

That would turn a very tedious onboarding process into a few clicks from a great template that I can then tailor to my needs.