Here is a list of 3rd person point-and-click games, most of which I've played at some point, but not all. For example any game that required online authentication and restricted the number of installations I did not buy and did not play.
I've included dates to give a general idea of what quality of graphics you can expect, and how likely the game is to run without tweaking. A few games, like The Longest Journey, have been updated and re-released, so those should work on modern computers.
I won't make any claim about the quality of the stories because I've disliked game stories that other people have enjoyed and vice versa.
There are some cases, like with the Agatha Christie games, where some people are able to play on modern computers while others are not. Any game currently available as a legal download from websites like GOG, Fireflower, Shadow Tor, Steam, or itch.io should play provided your computer meets the requirements, even if the game was originally released over ten years ago.
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Agatha Christie: And then there were None (2005)
Agatha Christie: Murder on the Orient Express (2006)
Agatha Christie: Evil Under the Son (2007)
Art of Murder: FBI Confidential (2008)
Art of Murder 2: Hunt for the Puppeteer (2009)
Art of Murder 3: Cards of Destiny (2010)
Belief and Betrayal (2008)
Black Sails (2010)
Chronicles of Mystery: The Scorpio Ritual (2008)
Chronicles of Mystery 2: The Tree of Life (2009)
The Dark Eye: Chains of Satinav (2012)
The Dark Eye: Memoria (aka just Memoria) (2013)
Journey to the Center of the Earth (2003)
The Longest Journey (2000)
Lost Chronicles of Zerzura (2012)
Lost Horizon (the first one, not the 2nd one) (2010)
Memento Mori (2009)
Memento Mori 2: Guardians of Immortality (2014)
Moment of Silence (2004)
Mystery of the Druids (2001)
Nibiru: Age of Secrets (2005)
Overclocked: A History of Violence (2008)
Perry Rhodan: The Immortals of Terra (2008) (aka Perry Rhodan: Myth of the Illochim)
(Perry Rhodan has dull, muted colors, so check screenshots)
Sherlock Holmes: The Case of the Silver Earring (2004)
Sinking Island (2007)
Undercover: Operation Wintersun (2007)
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To compare dates of the above with the dates of the games you mentioned
Alpha Polaris (2011)
Black Mirror (2003)
Black Mirror 2 (2010)
Black Mirror 3 (2011)
Gray Matter (2010)
The Lost Crown (2008)
Secret Files: Tunguska (2006)
Secret Files 2: Puritas Cordis (2009)
Secret Files 3 (2012)
Secret Files: Sam Peters (2013) (shorter than others in the series)
Syberia (2002)
Syberia 2 (2004)