Showcase of beautiful section styles combinations

Question

Working with all kinds books, I often need inspiration for a set of sectioning styles that are coherent, logical and aesthetically appealing. Well-known examples include Edward Tufte and the style used in Robert Bringhurst's The Elements of Typographic Style.

I would kindly like to ask you to show your examples—all the better if the example includes LaTeX source. If you refer to a specific author or publication, it would be useful to include an image.

The mentioned examples are typically limited to chapter title, section and subsection. At times, I need a set of styles with more depth—chapter title, section, subsection, subsubsection, paragraph, subparagraph, etc. So sets with more depth are greatly appreciated.

Answer 1

See the memoir manual (try texdoc memoir or texdoc memman) sections 6.5 and 6.6 which show a variety of chapter and lower level headings in a variety of styles together with the code to produce them (but for the code of some of the chapterstyles you will have to look in the the actual memoir class file). Note that the several chapter styles are integral to the memoir class.

Answer 2

I absolutely don't claim it to be "beautiful", but would like by posting my own sectioning style to encourage other answers.

This is my attempt at a (very) compact style for un-numbered sections:

\documentclass{scrartcl}
\usepackage{xcolor}

% Unnumbered titles.
\setcounter{secnumdepth}{-\maxdimen}

% Playing with the fonts
\setkomafont{subsubsection}{\normalfont\bfseries}
\setkomafont{paragraph}{\normalfont}
\setkomafont{subparagraph}{\normalfont\itshape}

% Playing with the spacing
\RedeclareSectionCommands[beforeskip=-.35\baselineskip, afterskip=.15\baselineskip]{section, subsection, subsubsection, paragraph, subparagraph}
\RedeclareSectionCommands[afterskip=-.5\baselineskip]{paragraph, subparagraph}
\addtokomafont{section}{\centering}

% Color from https://bedienhaptik.de/latex-template/
\definecolor[named]{myColorMainA}{RGB}{0,26,153}

% Coloring the titles
\addtokomafont{section}{\color{myColorMainA}}
\addtokomafont{subsection}{\color{myColorMainA}}
\addtokomafont{subsubsection}{\color{myColorMainA}}
\addtokomafont{paragraph}{\color{myColorMainA}}
\addtokomafont{subparagraph}{\color{myColorMainA}}

\begin{document}
    \section{Level 1}
    The quick brown fox jumps over the lazy dog.
    \subsection{Level 2}
    The quick brown fox jumps over the lazy dog.
    \subsubsection{Level 3}
    The quick brown fox jumps over the lazy dog.
    \paragraph{Level 4}
    The quick brown fox jumps over the lazy dog.
    \subparagraph{Level 5}
    The quick brown fox jumps over the lazy dog.
\end{document}