Progression fantasy, although present as a minor element in many mainstream fantasy and sci-fi stories, has only been recognized as a full-fledged sub-genre within the past 10 years. The popular prog fantasy/litRPG series
Dungeon Crawler Carl by Matt Dinniman belongs in this subgenre.
Dungeon Crawler Carl has enjoyed success within the traditional publishing world, but Progression Fantasy has been going strong for many years within the indie/self-publishing scene, with many amazing titles produced by talented authors who know how to craft a kickass narrative.