Working on a redirect map for a client moving platforms and they have all of their category pagination indexed - no canonical link and no rel next/prev's on any of them. Should I redirect the pagination pages to the main category page on the new platform? Or Should I allow the pagination to de-index itself type of thing? Thoughts and experience?

Hi There! Taking on a  small project up updating and adding in Schema to a clients site; a previous developer half put in data vocabulary. In my planning I was wondering if their would be a best schema type for category page of products - or a collection of products? Any ideas and experience? Thanks!