Hello! I haven't posted in a while x_x Anyway, I thought I would post some thoughts on Pokemon that I have been using recently.
What even switches safely into a Mega Houndoom aside from really uncommon stuff like Hariyama and Zweilous?
Something I've been using recently is Sacred Sword Doublade. Sacred Sword is much more viable now with Houndoom running around and it has some other uses too, such as breaking Registeel and Cobalion faster, completely destroying SubBU Braviary (haven't seen it recently but w/e), hitting stuff like Magneton and Heliolisk if they try switching into an Iron Head, and also helps ease prediction a bit. I use the typical SD Doublade set, but with Sacred Sword>Shadow Claw. I recommend giving it a try.
I honestly feel as though Hitmonlee's viability hasn't really decreased much. It lures in the same stuff (Aromatisse, Amoonguss) and can hit them with Double-Edge :3 I would say that it does its main job quite well. Spiritomb, Cresselia, and Doublade are still annoying, but nothing new there.
Archeops is pretty fun to use. I've been using a lead set with Taunt, Stealth Rock, Endeavor, and Knock Off and had success with it. It doesn't really like Fake Out leads (Lopunny and lol Ambipom), Rock Blast Rhyperior, and Scald burns from Omastar and other stuff, but it does okay.
Dragalge is a lord. Its typing gives it switch in opportunities against a bunch of stuff like the Electric-types, Clawitzer, defensive stuff including Amoonguss (after Spore), Aromatisse, and Alomomomola, and other stuff that I'm too lazy to remember. Its Adaptability Specs Draco Meteors destroy even some of the most SpD Pokemon. A huge threat right now. If you desperately need a switch-in, Bronzong and AV Escavalier are pretty cool.
I haven't used M-Lopunny at all yet, but it was a pain trying to get around it. It does really well against most of my offensive teams thanks to its amazing speed backed up by great Atk and high powered STABs.