I checked the SDK documentation and previous posts, no results other than the canned Community folder definition.
What purpose does the Official2020 and Official2024 peer folders serve? They are programmatically created when users choose to move their Community folder installation. Can they be safely removed, or renamed?
Apologies for the delay in answering: the two folders are related to the Marketplace indeed.
They will allow to have both the 2020 & 2024 versions of the same package on your hard drive.