My favorite example of liminalism is Everything Empty Always Alone, a man on YouTube in his 40s who claims to be a time traveler and films himself walking and driving around empty metropolitan areas. He claims he’s recording from some sort of alternate universe, but it’s likely he’s just at these locations at odd hours. In any case, it’s fun outsider art. Or maybe it’s all true you never know.
https://www.youtube.com/@EverythingEmptyAlwaysAlone/videos