United Kingdom company - Tax Classification & Tax Code set-up

Dear Experts,

Kind favor,
Could you help me provide a few insights on setting up "Set Tax Rates - Sales" App where we need to set-up the combination of Tax Code & Tax Classification?
The reason is when I checked the standard Tax Classification & Tax Code, they are not matching in a way.

It will be great to get some guidance on how other United Kingdom companies are setting up with standard configurations.

We have Europe Customers, GB customers & some Asian customers. I am thinking to separate tax set-up by categories;

GB customers used tax code - A0,A1,A3,A4,A7

European used - A0,A1,A3,A4,A5,A6

Non-European used - A0,A1

Thank you, much appreciated.