Dude, if you struggle with a Hubert deck just bleed them during round 2 or force it out during round 1.
The 1 time I faced Adda with my Gernichora deck I decided to bleed her out round 2, to be fair it was irrelevant if I would even have lost round 1 on even, if you force them enough they crumble.
Hubert in fact is reliant on a lot of setup to be overwhelming and the power of Northern Realms (actually all engines) is the reason I am maining Enraged Ifrit, Cleaver, the damage Crone and Chironex, in fact these about always find value, are super trades against engines and destroy these setup reliant decks.
And besides, these are the reasons non-overload engine decks have an awfully tough time.
If anything we need more cards like Hubert, which reward buidling around an actual strategy, rather than just point slam.
If you run Meve instead of Adda you just lose the 8 points you had guaranteed to protect all the engines you have to keep alive for 1-3 turns to go off with Hubert, you can always interact with Hubert and last time I checked those decks did not run Revive, so they cannot access him again, bleeding them out with monsters of everything should be easy to do, control should also be an option, if you run Nilgaard you should already play 2 Alba Armored Cavalry (+ potentially more locks) and can play 3/4 of the control devices monsters run, if you cannot answer the right engines you either messed up building your deck or assumed you could just slam down all your cards without playing strategicly, in which case you deserve to lose.
Skellige and Scoiatael also have some great cards to both push and answer engines (which are essential, especially against Meve Hubert).
The game is supposed to be strategic around guessing and knowing what your opponent does, if they just slam down cards not trying to outplay their opponent they deserve to lose, in the initial Gwent things were even tougher, almost immediately being an instant loss if you failed to put enough tempo into every single play, as going 1 card down was a lose condition, so being able to answer during a long round is expected.
In case you actually do play big (non-control) monsters (and complain about Hubert) you kind of have to deal with it, while you counter control you get massacred by engines, that is intended and the design Gwent has always been.
As for rrc, you do not face these decks often, given that they get completely destroyed by deploy removal, which is just merciless in homecoming.