There are actually seven variants of this:

char description unicode html html entity utf-8
· Middle Dot U+00B7 · · C2 B7
· Greek Ano Teleia U+0387 · CE 87
Bullet U+2022 • • E2 80 A2
Hyphenation Point U+2027 ₁ E2 80 A7
Bullet Operator U+2219 ∙ E2 88 99
Black Circle U+25CF ● E2 97 8F
Black Large Circle U+2B24 ⬤ E2 AC A4

Depending on your viewing application or font, the "bullet" char may seem very similar to either the Middle Dot or the Bullet.

Answer from RocketNuts on Stack Overflow
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W3Schools
w3schools.com › html › html_entities.asp
HTML Character Entities
Entity names are easier to remember than entity numbers. A commonly used HTML entity is the non-breaking space:  
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W3C
w3.org › wiki › Common_HTML_entities_used_for_typography
Common HTML entities used for typography - W3C Wiki
This part of the Web Standards Curriculum looks at the different codes that can be used to represent text characters when there is a need to escape them. There are a number of HTML entities that come in handy when there’s a need for first-rate typesetting.
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W3Schools
w3schools.com › html › html_symbols.asp
HTML Symbols
To add such symbols to an HTML page, you can use the entity name or the entity number (a decimal or a hexadecimal reference) for the symbol:
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freeCodeCamp
freecodecamp.org › news › dot-symbol-bullet-point-in-html-unicode
Dot Symbol – Bullet Point in HTML Unicode
April 14, 2022 - In this article, I will show you the Unicode and HTML entities for showing bullet points on a web page. Towards the end of this article, I will also show you the 5-key combinations with which you can type a big dot symbol.
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W3Schools
w3schools.com › cssref › css_entities.php
W3Schools.com
If you use CSS to display any of these characters in HTML, you can use the CSS entity found in the table below.
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W3Schools
w3schools.com › charsets › ref_html_entities_e.asp
HTML Entities
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Find elsewhere
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W3Schools
w3schools.com › charsets › ref_utf_punctuation.asp
HTML Unicode General Punctuation
If the character does not have an HTML entity, use the (dec)imal or (hex)adecimal value.
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W3Schools
w3schools.am › html › html_entities.html
HTML Entities
Reserved characters in HTML must be replaced with character entities.
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VNTweb
vntweb.co.uk › home › html › html character code for the dot
HTML Character Code for the Dot - VNTweb
December 24, 2020 - W3Schools – HTML entities 4 · W3.org – entities used for typography · File format – unicode character b7 · WordPress Hide Elements in the Top Bar · Web Page Background Images · Change root User Email Address · ffmpeg mp4 Better Compression · Reset Forgotten Windows 10 Password, PIN is Known ·
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W3docs
w3docs.com › learn-html › html-entities.html
HTML Entities - Free, Online Tutorial | W3Docs
An HTML entity begins with an ampersand (&) and ends with a semicolon.
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W3Schools
w3schools.com › charsets › ref_html_symbols.asp
HTML Symbol Entities Reference
If the character does not have an entity name, you can use a decimal (or hexadecimal) reference. If you use an HTML entity name or a hexadecimal number, the character will always display correctly, independent of what character set (encoding) your page uses!
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Toptal
toptal.com › designers › htmlarrows › punctuation › middle-dot
Middle Dot HTML Symbol, Character and Entity Codes — HTML Arrows
HTML symbol, character and entity codes, ASCII, CSS and HEX values for Middle Dot, plus a panoply of others.
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W3schoolsapp
w3schools.w3schoolsapp.com › charsets › ref_html_symbols.html
HTML Symbol Entities Reference
If the character does not have an entity name, you can use a decimal (or hexadecimal) reference. If you use an HTML entity name or a hexadecimal number, the character will always display correctly.
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Entitycode
entitycode.com
Entity Code - A Clear and Quick Reference to HTML Entities Codes
A clear and quick reference for webmasters to commonly used HTML symbol entities codes
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W3Schools
w3schools.com › CHARSETS › ref_html_entities_d.asp
HTML5 Entity Names by D
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
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W3Schools
w3schools.com › charsets › ref_utf_geometric.asp
HTML Unicode Geometric Shapes
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
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Mimo
mimo.org › glossary › html › entities
HTML Entities: Syntax, Usage, and Examples
Display special characters and symbols in HTML with entities! Learn how to use <, &, ©, and more to prevent code conflicts and improve formatting.
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HPL
icl.utk.edu › ~mgates3 › docs › html-entities.html
HTML 4.0 Entities
Ever see web pages with random question marks and nonsense symbols? This occurs when people incorrectly encode characters using their computer’s character set, rather than the standard HTML encodings. The table below shows the standard HTML entities, generated from the HTML 4.0 spec at w3.org ...