What standard Basic libraries can I load?

I am getting to grips with access2basic.

In some documents and examples I see libraries being loaded - for example, the ‘Tools’ library.

What other libraries are installed with LO5 and how do I identify their content

Presumably I can do this from the Macro organiser, but there might be a programmatic way of iterating over the libraries and contents.

‘Access2Base’ and ‘Tools’ are worth exploring by Basic macro coders. Both are documented.

As of release 7.x, I suspect other libraries to be of little if no interest - for Basic macros - according to recent updates inside help:
https://help.libreoffice.org/7.1/en-US/text/sbasic/shared/03/lib_script.html