FYI This forum post outlines what the various different metadata fields are: What are the relation between these columns you get while exporting data in Excel? - #2 by Kal_Lam
NOTE re UUID - it can change if the submission is edited, and also it isn’t always unique on the server (see references in above post) so whilst UUID can often be useful to identify a particular submission there can be problems relying on UUID in certain scenarios.
All the best with your project!
