What do you mean two separate “lists”?
If you want to duplicate a listing, you can using a plugin, such as https://wordpress.org/plugins/duplicate-post/
If you want to create categories of listings, each with their own page, you can do that by using the plugin’s Register Taxonomies page and creating a new taxonomy and associated term to describe the two separate types of listings.
I am looking for something like your second suggestion. But if I do create 2 new categories of listings, each with their own page, will I be able to create two search widgets that search exclusively to each category?
No, but the search widget lets you select which taxonomies to search through. The user can then select the term within that taxonomy to search by.
That is true. It’s not exactly what I’m looking for since my two lists are not related at all. But it will work in a pinch.
Thanks for the info & the quick replies!