What can you see taking place in/sharing the same universe as Grand Theft Auto IV?

On my end, it's a whole headcanon of mine that the Grand Theft Auto HD Universe (including IV, The Lost and Damned and The Ballad Of Gay Tony) is set in the same universe as over hundreds and thousands of different media including other video games with Los Santos being the even more insane twin of Los Angeles and of course Liberty City is the even more insane version of New York City.

Some of what shares the same universe as GTA IV are:

Black Hawk Down

https://youtu.be/K47VXTNkE_8?si=iPkIQyBTF7Abpz44

Sons Of Anarchy & Mayans MC

https://youtu.be/hA_2ESO1aUo?si=qPvjxitlTwbraI_4

Castle

https://youtu.be/hPW55aMo8D0?si=jR-FFS6njWXPFk9S

ER

https://youtu.be/xE0V-TmqTP8?si=JtK15bygHiLWXiII

&

Inglourious Basterds

https://youtu.be/7LFtoz9sERo?si=XcKBLMiLLHxNrRCz

On my end, it's a whole headcanon of mine that the Grand Theft Auto HD Universe (including IV, The Lost and Damned and The Ballad Of Gay Tony) is set in the same universe as over hundreds and thousands of different media including other video games with Los Santos being the even more insane twin of Los Angeles and of course Liberty City is the even more insane version of New York City.

Some of what shares the same universe as GTA IV are:

Black Hawk Down

https://youtu.be/K47VXTNkE_8?si=iPkIQyBTF7Abpz44

Sons Of Anarchy & Mayans MC

https://youtu.be/hA_2ESO1aUo?si=qPvjxitlTwbraI_4

Castle

https://youtu.be/hPW55aMo8D0?si=jR-FFS6njWXPFk9S

ER

https://youtu.be/xE0V-TmqTP8?si=JtK15bygHiLWXiII

&

Inglourious Basterds

https://youtu.be/7LFtoz9sERo?si=XcKBLMiLLHxNrRCz