Is this the kind of fluffy list, that you want to be fluffy because you don't want people to say its competitive/
OP? Or fluffy because you've actually read the/some fluff and really like the idea of following that path? If its the first, then what ever you do,
SW are going to be powerful, and still relatively fluffy. If its the second one, you should already have a good idea of what you need, and just want help optimising your options a little,
Like already said, Ragnar runs with Blood Claws. (Or at least thats what i'm led to believe). You could actually run a double Land Raider list, one with wolf guard, one with Ragnar and friends. But i'd be very delicate.
At the moment, you have a very very expensive squad, assuming Ragnar, the 5 Wolf Guard and Arjac are going in the
LRC. Thats pretty much 950 points isn't it? (A little under, i could be way off, only quickly added in my head, and the time i'm spending telling you that I could have opened the calc and checked for certain).
Thats one way to make Space Wolves suck

Its a pretty hard task, as everything is so good, but a squad that expensive, in one of only 3 tanks on the board... Any army with decent long range
AT is going to stop that Land Raider, or blow it up. At the very least i'd drop Arjac, but i'd be tempted to begin with at least, dropping all Wolf Guard in place for blood claws, or
PA wolf guard. They seem cool, but just because you want 'fluffy' doesn't mean you need to make a list that probably won't do very well against a lot of even not all that competitive armies. If you really like the Wolf Guard termies, i'd say drop the Long Fangs, extra armour on the rhinos, arjac and get a 3rd rhino squad. And just try to get across the board without your tanks blowing up.