Setting up routes for AMP template with category-based urls I'm stuck on implementing AMP templates with category-based URLs as I can't find a way to route the different entry types in the Routes function in the CP.

I have a channel title Articles that has two entry types (Lists and Articles) with a URL format {businessCategory.first.slug}/{slug} that uses a primary category for the first segment of the URL.

I've tried */slug/amp as a route in the CP but then I can't change the AMP template for each entry type.

Any help would be greatly appreciated!
You don't strictly need to change the AMP template for each entry type; you can just load the entry in your AMP template via the slug in the URL.

Check out how I did it here: Implementing AMP in Craft CMS