Mosetism

Mosetians worship the corporations of the old world and were founded based on the life of pre-war business mogul Clyde Moset. They consider the CEOs, CFOs, Boards of Directors, or other people of importance to a company to be saints and the inventions they made to be holy relics. To show their devotion, they scavenge broken signs or other pieces of brand recognition from the rubble and display it in their dwellings or temples. In their eyes, whatever a company did before the bombs was part of a greater divine plan, no matter how dark or sinister it was in reality. The majority of Mosetians revere all pre war corporations, but some sects idolize specific ones more than others.
Their name and ethos are derived from the life of Clyde Moset, the mind and money behind a myriad of pre-war corporations from Super-Duper-Mart to Manticore. The first of the flock discovered a ruined movie studio that had a working reel from a documentary that Clyde was featured in. This film highlighted Moset's career, all the businesses he directly founded, and every board of directors he was on. Once these people realized just how complex and extensive these megacorporations of old were, they thought that pre-war humans must have been gods. Most of the acolytes of this faith worship Clyde as the cardinal saint and his companies as being somehow more holy than the others. This is not always the case, but even the most oddball Mosetians will still admit that the concept started with the discovery of Clyde's life.
Depending on what facet of old world corporations a sect of Mosetians focuses on, they can either be a help, a hindrance, or a downright threat to progress. Those that mainly worship prewar food corporations might find themselves operating a local food bank while those that marvel at the technology of tech companies might make a living scavenging the ruins of silicon valley. Any number of interpretations can come from this way of thinking, which is the good and the bad thing about Mosetism.
There is no official hierarchy, although many sects elect a headmaster to organize their efforts, whatever they may be. Their acceptance in a wasteland settlement, like many other eccentric cults, all depends on the behavior of the closest sect. Due to how spread out each cloister of Mosetians tend to be, they rarely communicate with one another, let alone collaborate on anything. This has led to Mosetism not spreading as prolifically as some of the other religions out there in the approximately 150 years that they've been around.