I recently asked a question Has there been a Kraken patron for the Warlock class in Unearthed Arcana?, the answer to which was that this Kraken warlock patron wasn't UA, but was rather part of Mike Mearls' Happy Fun Hour (HFH).
I like to keep up to date with the new UA class archetypes that come out, and after what I believe was the first class archetype to come out of HFH, the Order Domain, was then reproduced in a UA article (then released officially in GGtR, but that's besides the point here), I then stopped paying attention to HFH, assuming any new archetypes would similarly appear in UA (since videos are more awkward to watch at work when I only have so long at lunch, and glancing over a pdf is much quicker and easier).
Clearly I was mistaken in this. I'm now wondering what other class archetypes have been created in HRH that I am not aware of. I want to ask a question like "What are all the class archetypes Mike Mearls has made in HFH?" (which I'm guessing might be a list question, and one that will require updating if/when he creates more; unless HFH eventually stopped running, then maybe this problem would be mitigated), or perhaps "Is there a (legal) website somewhere that keeps track of new class archtypes created in HFH?" (which is probably a shopping question).
Is there an on-topic variation of this question, or is RPG.SE simply not the place to ask such a thing?