To understand the many different variations of werewolf transformation and form, one must look at the backgrounds, means, and history of such a process.
Teen wolf wolves:
This series follows the idea of a disease, like the general beginning of all werewolf stories. Werewolves typically never shift completely into 'beta form', and remain humanoid with extra fur, hardened features/senses, and certain new anilities. These wolves also focus more so on having true packs, i gets ting with the wolf who turned you and the ones you turn. It also give the underground society feel with the werewolf hunters.
Beta forms I would say better fit the idea of a werewolf. I may be misguided, since only Peter Hale (an alpha) has ever fully shifted. Meaning fur all over and big werewolf body.
Supernatural wolves:
Although shortly addressed, and not in much detail, werewolves from this universe take on a much more paranormal shape, much like many things in the show. Werewolves from here are not part wolf as far as fan can tell, not even resembling the creatures we imagine. They are simy people who are unknowingly infected with a terminal disease that has no cure. They turn into rabid killing machines by night, only to wake up with no memory of it all. Regulars to the show will realize this is not much of a surprise.
The only way to stop killing is to shoot yourself with a silver bullet in the heart. That is hat ties it to old legends, in the end, and rescues it from complete originality.
Hemlock Grove Wolves:
This series has a remarkably new and fresh (though gory) take on Werewolves. It follows a more cultic background, showing isolation. Werewolves never seem to interact, since early in the show we know Peter is the only wolf anyone knows.
The change is different from most; involving a grotesque shedding of human body parts, revealing a wolf underneath. The eyes, teeth, fingers and everything else are messily discarded. In the end (of the first transformation we see) Peter eats the leftover human flesh. Some assume this is so he can turn back later in a similar way.
Despite it being so new, this is very accurate to Native American legends. But most can identify this as a shapeshifter (taking a new form) rather than a werewolf (half formed).
Twilight wolves:
The wolves in twilight are pretty signature, showing it's own culture in a simple way, like anything else you research.
Rather than a disease or curse, it is viewed as a powerful ability. It also falls into a shapeshifter category.
Humans experience no pain when they turn by their own whim. It's simply a morph from human to oversized wolf. But this also carries abilities.
Wolves have telepathic abilities, able to connect with their own kind. Wolves are also able to recognize and percieve people they know as in their original form. Humans are super-strong, and give off more body heat than normal. They also have keen senses.
It falls in again with Native American legends. Ther is the same pack interaction from Teen Wolf here too.
(I cannot review Being Human, or Van Helsing, because I have not seen either of them. I apologize and feel free to decide the ideals of them yourselves!)