everyone says the Kanepixels stuff is the best, but in my opinion, establishing a lore and a story with this big corporate overlord and science fiction stuff was a mistake and only erodes the mysterious and malevolent nature of the entire thing.

There's a youtube account called "mattstudios" who does his own take, and generally spearheaded the "poolrooms" variant of this genre, that is far more grounded and tries to present the concept from the point of view of an everyday guy who "noclips" into it purely by mistake.

for me, this is the best backrooms take, not just for how realistic the video artifacts are, but because of how it captures just a guy recording something on his handicam in 1997 and how he'd realistically act: https://www.youtube.com/watch?v=KenTOGFwLpU