>>541673239
Usually the bulk of these folders go into system partition, /home is the one that should be separate. Reason is different distros use different mutually incompatible software repositories, your distro provides the foundation, and maintainers build FOSS programs targeting this foundation.
Then the /home/username folder holds config files for installed non-system software, so normally you want to avoid re-using the same user name/folder across many distros. Different usernames on the same partition housing /home is fine.