Both rejuvenation.com and schoolhouse.com have plug in fixtures, but they are mostly sconces, not handing ones. Plus they are on the expensive side.

Just a google search I found cuter ones on amazon.

https://www.amazon.com/Pendant-Fixtures-Century-Chandelier-Ceiling/dp/B09M9V9L7Y?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&smid=A1IJSRXEBYANGL&th=1

This has an option for plug ins

https://rufatlights.com/products/ceramic-pendant-light-plug-in-hanging?variant=40464462610491

Maybe something like this

https://www.pbteen.com/products/layered-in-pendant-fringe-plug/?catalogId=21&sku=899865&cm_ven=FreePLA&cm_cat=Google&cm_pla=Lighting%20%3E%20Ceiling%20Lighting&region_id=668460

Maybe something farmhouse

https://www.amazon.com/Farmhouse-Pendant-Fixture-Adjustable-Contemporary/dp/B096LWHC2Y?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&smid=A2EFKW1H90FGD0&th=1

Something simple

https://www.wayfair.com/Wade-Logan%C2%AE--Antra-Plug-in-Pendant-Light-with-Hemp-Rope-and-Fabric-Lamp-Shade-X110256714-L6087-K~W009145603.html?refid=FR49-W009145603

Here is the swag pendant hardware

https://www.build.com/craftmade-sw1001/s1795226?uid=4242466&searchId=qdkiMETzxX

maybe look for a shade to go on that.

I think that if you search by plug-in pendant you will find some options.