Win10 : Test data generater?

Anybody know a more modern backup/storage data generator than this?

Been doing some restic testing with - HPCreateData.

Its a small standalone freebie app from HP Storage (2002). It can generate directory trees of user defined depth and breadth filled with files of sizes of your choice. With file contents being fixed bytes, incremental, random a small selection of compressions.

From what I have seen so far there seems to be a lot of trivial data generators out there but none that builds directory trees filled data types you can choose from. A bit off the topic of restic but its the type of tool I used to use a lot for testing backups and data transfers because the test data could be replicated.