Hi Sammatz,
Thanks for using Microsoft products and posting in the community, I'm glad to offer help.
To copy a list including the list contents, you can follow the following steps:
- Open the source list > Export to Excel.
- Open the exported *.iqy file > import it as a table > save the workbook as *.xlsx file.
- Go to Microsoft Lists > New list > From Excel > upload the saved workbook (*.xlsx).
- Edit the data and create the duplicate list. (You can delete the last two columns ("Item Type" & "Path") after creating the list)
Hope the above suggestion can be helpful, and please feel free to let me know if you have any concerns, I'll continue to help you.
Best Regards,
Arck