Sei que tem alguma publicação ou comentário com várias formatações em markdown aqui, mas não encontrei, então estou fazendo esta para testar.

h1 Heading 8-)

h2 Heading

h3 Heading

h4 Heading

h5 Heading

h6 Heading

Horizontal Rules

---

---

---

Emphasis

This is bold text

This is bold text

This is italic text

This is italic text

Strikethrough

Blockquotes

Blockquotes can also be nested...

...by using additional greater-than signs right next to each other...

...or with spaces between arrows.

Lists

Unordered

• Create a list by starting a line with +, -, or *
• Sub-lists are made by indenting 2 spaces:
  • Marker character change forces new list start:
    • Ac tristique libero volutpat at
    • Facilisis in pretium nisl aliquet
    • Nulla volutpat aliquam velit
• Very easy!

Ordered

1. Lorem ipsum dolor sit amet

2. Consectetur adipiscing elit

3. Integer molestie lorem at massa

4. You can use sequential numbers...

5. ...or keep all the numbers as 1.

Start numbering with offset:

57. foo
58. bar

Code

Inline code

Indented code

// Some comments
line 1 of code
line 2 of code
line 3 of code

Block code "fences"

Sample text here...

Syntax highlighting

var foo = function (bar) {
  return bar++;
};

console.log(foo(5));

Tables

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Right aligned columns

Option	Description
data	path to data files to supply the data that will be passed into templates.
engine	engine to be used for processing templates. Handlebars is the default.
ext	extension to be used for dest files.

Links

link text

link with title

Autoconverted link https://github.com/nodeca/pica (enable linkify to see)

Images

Like links, Images also have a footnote style syntax

With a reference later in the document defining the URL location:

Plugins

The killer feature of markdown-it is very effective support of
syntax plugins.

Emojies

Classic markup: 😉 😢 😆 😋

Shortcuts (emoticons): :-) :-( 8-) ;)

see how to change output with twemoji.

Subscript / Superscript

Aqui troquei para HTML:

• 19^th
• H₂O

Footnotes

Footnote 1 link¹.

Footnote 2 link².

Duplicated footnote reference².

Fonte: https://markdown-it.github.io/

Mermaid

pie title NETFLIX
         "Time spent looking for movie" : 90
         "Time spent watching it" : 10

sequenceDiagram
    Alice ->> Bob: Hello Bob, how are you?
    Bob-->>John: How about you John?
    Bob--x Alice: I am good thanks!
    Bob-x John: I am good thanks!
    Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.

    Bob-->Alice: Checking with John...
    Alice->John: Yes... John, how are you?

graph TB
    sq[Square shape] --> ci((Circle shape))

    subgraph A
        od>Odd shape]-- Two line<br/>edge comment --> ro
        di{Diamond with <br/> line break} -.-> ro(Rounded<br>square<br>shape)
        di==>ro2(Rounded square shape)
    end

    %% Notice that no text in shape are added here instead that is appended further down
    e --> od3>Really long text with linebreak<br>in an Odd shape]

    %% Comments after double percent signs
    e((Inner / circle<br>and some odd <br>special characters)) --> f(,.?!+-*ز)

    cyr[Cyrillic]-->cyr2((Circle shape Начало));

     classDef green fill:#9f6,stroke:#333,stroke-width:2px;
     classDef orange fill:#f96,stroke:#333,stroke-width:4px;
     class sq,e green
     class di orange

gitGraph:
    commit "Ashish"
    branch newbranch
    checkout newbranch
    commit id:"1111"
    commit tag:"test"
    checkout main
    commit type: HIGHLIGHT
    commit
    merge newbranch
    commit
    branch b2
    commit

Fonte: https://mermaid.js.org/syntax/examples.html

Footnotes

1. Footnote can have markup

   and multiple paragraphs. ↩

2. Footnote text. ↩ ↩²