There are undoubtedly a lot of full classes as well that have been made. The Gunslinger and Blood Hunter* were both part of Critical Role. Matt Colville made the "Illrigger" (a diabolic paladin) for one of his players on his campaign stream. There have been a number of Warlords, Artificers, Shamans, and other concepts (many seemingly anime-inspired) that fell through the cracks in published 5e materials.While I have seen quite a few full classes as well as sub classes. I think its way too easy to find ones which are not particularly good as well. Those who want something else seem quite confident in trying them out though.
* WTF is a Blood Hunter anyway? Was this a popular character concept that I had never noticed?