Selling items from multiple sources?

Site URL: https://www.nature-culture.net/

I'm trying to set up a store. We have items that from Printful as well as items from 2 or 3 other sources. Is there a way to list all of them in a single store, and have the Printful items go to Printful for fulfillment and the other items be handled manually? I tried to search for this, but I couldn't figure out the correct keywords that were helpful.

The store isn't live so you won't find it on the linked site.

Thanks for your help!