I was trying to set up content organizer rule for items that have the 'item' content type, but only 'items' with the document content type appear in the drop down for content types in the organizer rule. Is creating content organizer rules for 'item' content type not possible? If not, if I want to use information management policy to move items to another list, what are some options?

So I found that it is not possible for List item https://social.technet.microsoft.com/Forums/office/en-US/40be3781-7257-42b6-b87f-b5185534b787/content-organizer-rules-doesnt-see-list-item-content-type?forum=sharepointgeneralprevious.

What are possible solutions to move old items to another list using information management policy?

Next bet would be to use PowerShell maybe?