Files were zipped up for easier download. "original_dir.txt" shows the original file directory.

The following zips are subfolders in the original file structure:
"l0r_symlink.zip"
"save.zip"
"tirs_stray_light.zip"

When an L1GS product is processed, the original L0Rp is output and the L1R product is generated and output as part of the process.

The L0Rp product is in the "l0r_symlink" folder.

The "L1R.zip" contains the HDF file containing the L1R product.

The "L1GS.zip" contains the main output files for the L1GS product.

The "sys_l1g.zip" appears to contain an HDF version of the L1GS product (assumed to be redundant with the TIF files in "L1GS.zip").

"Other_Files.zip" contains many other files, some of which are needed for further processing of the L0Rp and L1R.  Most notably is the CPF file ("LC08CPF_20210801_20210831_02.06") for geometric processing.  Many of the other files are merely informational and are output as part of the processing.