Here is a utility script - in the attached outline - that will list the contents of an object's __dict__ in a fairly readable way including the docstrings. You can use it for listing the methods, functions, and classes of c or g, or of any other Python object. In the outline, the script inspects the contents of the ViewRenderedController3 of the viewrendered3 plugin, but you can use it for c, g, or anything else.
I actually developed it to view c and g to help me with other development projects. It's pretty brute force, and I suppose it could be done better using the inspect module, but I was concentrating on formatting the docstrings. You can use the format_docstr() function to format other docstrings, including in actual python files that have been read but not opened or imported - for example, Leo plugin files.
In the outline, I copy the output to the clipboard. That's because it tends to be fairly long, and it's better to paste it into a node or another editor than to try to print it to the log pane or the console.
I won't pretend this is bullet proof or production ready, but it is useful as is.
Here is a sample output for a commander (lines may be wrapped here - could be more readable in a page with wider lines):
_currentPosition class 'leo.core.leoNodes.Position'
_prev_next class 'leo.plugins.nav_qt.NavController'
_style_deltas class 'collections.defaultdict'
defaultdict(default_factory=None, /, [...]) --> dict with
default factory The default factory is called without
arguments to produce a new value when a key is not present,
in __getitem__ only. ...
_topPosition
abbrevCommands class 'leo.commands.abbrevCommands.AbbrevCommandsClass'
A class to handle user-defined abbreviations. See
apropos-abbreviations for details.
abbrev_place_end class 'str'
abbrev_place_start class 'str'
abbrev_subst_end class 'str'
abbrev_subst_env class 'dict'
abbrev_subst_start class 'bool'
active_stylesheet class 'str'
atFileCommands class 'leo.core.leoAtFile.AtFile' A class implementing the atFile subcommander.
at_root_bodies_start_in_doc_mode class 'bool'
autoindent_in_nocolor class 'bool'
bufferCommands class 'leo.commands.bufferCommands.BufferCommandsClass'
An Emacs instance does not have knowledge of what is
considered a buffer in the environment.
changed class 'bool'
chapterCommands
chapterController class 'leo.core.leoChapters.ChapterController' A per-commander controller that manages chapters and related nodes.
collapse_nodes_after_move class 'bool'
collapse_on_lt_arrow class 'bool'
command_count class 'int'
command_function class 'function'
Execute a *Leo* script, written in python. Keyword
args: args=None Not None: set
script_args in the execution environment. p=None
Get the script from p.b, unless script is given. ...