There are movies similar to Ghost Operation Alpha:
The Shining
The Shining II
The Walking Dead
Game of Thrones
Resident Evil
Spirited Away
Blade Runner 2049
Ghosts of the Abyss
9 Total Memory
The Dark Knight
The Dark Knight
12 Pearl Harbor
Interstellar
Alien
The Matrix
The Matrix
Source Code
Chapter 18: Inception
The Shining III
Death Note
Some of these movies are adventure action movies similar to Ghost Operation Alpha, while others are sci-fi, suspense, or horror movies. I hope they can help you.
One great alpha house fanfic could be 'The New Member at Alpha House'. It's about a young guy who joins the house and brings a new energy to the group. He has to deal with the different personalities in the house and all the wild adventures that come with it.
You can try fanfiction.net. It has a large collection of fanfics from various shows, including Alpha House. Just use the search bar and type in 'alpha house' and you'll get a list of available fanfics.
The movie 'Alpha Dog' does have roots in true events. However, some elements might have been dramatized or adapted for cinematic purposes while still maintaining the core essence of the real story.