Which folder names are special in MATLAB?

I know some folder like "private" and "resources", and other that use "@" for clasess and "+" for pakages. There are more?

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-search-path.html

Class, package, private, and resources folders are special folders that cannot be specified explicitly as part of the search path. A special folder is added to the search path implicitly when its parent folder is specified as part of the path. To access the files and folders within a special folder, you must add its parent folder to the path.

(which implies that those are the only special folder names)