I have been using AutoKitten for a week now. Love it!
I turned off AutoCat, and emptied the autocat sheet, and I don’t think I am going back.
I do weird stuff with dating my paychecks, and it was pretty easy to add another case in the Actions to change a date to the first day of the next month.
I must have had a lot of complicated/non-standard autocat rules, because I tried importing once and many of them were not correct or got multiple rows. It probably works better for more mainstream rules. This was not a big deal, and it was nice when doing them manually to clean out unused rules anyway. (And add new ones!)
Really like your example sheet, and having the ability to do ‘comment’ rows is great for organizing.
Edit: From my testing, Google Sheets’ regex engine (RE2) and JavaScript’s RegExp object in Google Apps Script are different. So I had to change some of my RegEx from AutoCat rules to work properly in AutoKitten. Might be worth pointing that out in your first post, so people can find a RegEx helper that will give them correct format. (Or they are a savant and do RegEx manually. 
)