On the subject of Urshifu, it's definitely not that constricting on teaming as some people make out to be and I find Kartana and Kyurem more of a threat.
For 1, a lot of the Pokemon already viable in this Meta naturally enjoy the type they have that resists Urshifu's attacks.
Mandibuzz with Poison (Dark Crobat actually looks pretty dank but I'm not that sure to include it here) becomes a better natural check to Pokemon like Rillaboom and Kartana with Poison, can't be statused with Toxic, gains a Fighting/Bug resistance, and is neutral to Fairy, which helps a lot when you're typically pivoting a lot.
Corviknight/Skarmory with Fairy gain an extremely useful Dark resistance that also lets them resists Fighting, and not just for Urshifu, but also non-Fire Blast variations of Hydregion, Eon Duo, and Pokemon like Tapu Lele
Clefable can really run almost anything and still be fantastic, with Fire making offensive Clefables be even more threatening and Water/Fairy is a great type all together.
Other Fairies without Magic Guard can benefit from Poison, removing their weakness to Poison itself and absorbs Toxic.
Toxapex no longer is susceptible to FuturePort spam and gets a neat Knock Off Resistance with Dark, and Fairy Pex wouldn't be too much of a stretch since it also becomes better against Draco spam, Fighting spam, and U-turn spam.
And even Pokemon like Flying Magnezone, a fantastic Pokemon in this Meta, often will get +6 Def and force Urshifu to lock into Wicked Blow (which may not kill given Magnezone's bulk), while Magnezone will still KO Urshifu with Body Press (unless it's part Ghost, otherwise Thunderbolt can easily KOing after chip), and additionally can trap Urshifu with Steel typing.
And reminder that most of these Pokemon also have reliable recovery and utility outside of being a damage sponge.
Additionally, like I stated previously, Kyurem and Kartana are bigger threats that I account for more while team building.
While I realize I was a bit off with what resists Freeze Dry+Earth power in my previous post (forgetting about Rotom Heat, which additionally can act as a Urshifu check if you really wanted to), walling Kyurem throughout a game is still a monumental task with how little amount of good checks there are. Flying or Grass Heatran is very susceptible to being wore down when it's now Stealth Rock weak without reliable recovery. Same with Rotom-Heat/Frost and Bronzong. Pokemon like Steel Vikavolt and Cryogonal have levitate and recovery, but aren't that great outside of checking Kyurem. Frosmoth is of course Frosmoth, while Bug Mr. Rime and Ice Orbeetle sound awful as well. Flying Scizor is immune to Earth power, but now is 2HKOd by specs Ice Beam and Regular Scizor is still 2HKOd by the now STAB Earth power.
The most viable Pokemon that can resist Ground Kyurem's STABs is Steel Moltres, which is definitely more demanding as Mandibuzz, Zapdos, and Heatran are typically better. The reason why reliable recovery is important when dealing with Ground Kyurem is that it is now neutral to Stealth Rocks, making Kyurem an even better tank with its 125/90/90 bulk. Then there is also Kyurem's access to Focus Blast or Draco Meteor, making a check that much harder.
"What about Blissey? It can tank some of the strongest special hits and Ghost/Fairy removes its Focus Blast weakness" you may ask.
Yes it can, but Kyurem can just run SubRoost to pretty much invalidate Blissey entirely, just now even hard since Blissey can't thunder wave Ground Kyurem and has additional STAB to wear down Blissey faster.
Meanwhile, Kartana has some striking similarities to Urshifu when it comes to checking, that is having similar Pokemon that can "switch-in" to Kartana without instantly dying. What makes Kartana better in this Meta than Urshifu (imo at least), is that Urshifu is far more negatively impacted by triple types than Kartana and benefitting less. Like I said before, Kartana and Urshifu have similar damage outputs with their respective moves
(Yeah that's right. Kartana's STAB Knock Off is actually more powerful than Urshifu's Wicked Blow, that is also while having a chance to do more damage at random and removing an item). What makes Kartana so much harder to wall this Meta is its natural STABs, Beast Boost, and some other attributes.
Take Poison Mandibuzz for example. If Urshifu is part Poison, all its moves will be resisted by Poison Mandibuzz, while Urshifu needs Steel with Iron Head to hit Mandibuzz neutrally, and that is far weaker than its iconic STABs and also Kartana's Smart Strike that it'll naturally have STAB on.
Urshifu will also need to Poison Jab STAB and Iron Head STAB for Fairy Pex or something like Tapu Fini, while Kartana can slice through those same Pokemon easily with Leaf Blade. I may be wrong, but I'm pretty sure the only thing that resists Grass/Steel/Dark/Fighting is Rotom-Heat with Fairy typing or like Azumarill with Electric and Sap Sipper.
This honestly wouldn't be so bad to deal with if Kartana didn't have Beast Boost. With Kartana's already insanely high DPT, coverage, and good speed tier, Kartana being allowed to get 1 Beast Boost from a KO more often then not means you already lost. If you don't have something like Mach Punch or a faster Pokemon, or if Kartana is locked into a move that you have a x4 resistance to, you just lose. So you really need to have a all your checks to Kartana or your back ups are going to have a tougher time. But you know, good luck keeping those checks healthy too when Kartana just Knocks Off their HDBs or Leftovers, and switches out into any of the amazing defensive backbones this Metagame provides.
So other things that makes Kartana such a threat are its speed, being fast enough with scarf to outspeed the whole Metagame and threaten, Kartana naturally doing better than Urshifu vs Priority (Grassy Glide, Aqua Jet, Bullet Punch, and Extreme Speed are shrugged right off and Darktana and Fightana now resisting Sucker Punch with a nice 59/131 bulk), which additionally threats tons of offensive teams, and access to Sword Dance means Kartana can dominate defensive teams that Urshifu otherwise might struggle with.
With that, it's pretty clear how much more constraining Kyurem and Kartana are than Urshifu. Giving them 1 extra STAB to choose from changes so much about how you deal with them. Kyurem can more often blast its STAB Specs FD and EP more often when it can switch in without its stealth rock weakness limiting it and still can use its SubRoost set, while Kartana's coverage doesn't mind the target's triple typings so much since it'll often pack something neutral for it and depending on the set can invalidate most teams and being extremely strict about you making no errors. These 2 require a lot of gameplan and reach out for less than great checks to not lose to them instantly. At least with Urshifu, you have plenty of viable options as switch-ins, that aren't so restricted in using a specific typing.
Anyways, see you guys later.