Most efficient way to collect input file metadata?

Hi, I have several workflows that generate output data in excel format. The workflow has several file inputs also in excel. I would like to get the input file(s) metadata (file path, created date, modified date, etc) in a table so I can add it to the output files as a reference. What would be the best way to implement this?; collecting the input file metadata one by one looks inefficient (from the excel reader nodes). Any ideas or examples you can share?