The fear that mummies illicit is the fear that there will never again be enough mummia to snort.
I think with most mummy stuff was largly hollywood. Prior to that the extreamly wealthy would have parties showcasing all the wealth and artifacts stolen from Egypt.
Mummies were also used alot in trains as fuel.
I think the problem with werewolves is the cultural hook.
Zombie prey on our fears of society, and other. Not only from the zombies but how Society falls apart because of them.
Vampires preying our fear of rape or the basic fear of serial killers, someone killing out of the basic need to feed their desires.
Frankenstein's monster is the horror we can make with technology, the fear of going too far.
Sea monsters like the Kraken prey on our fear of the sea and how little we know of it.
The Cthulhu Mythos prey on our existential fears of the universe and if we truly are insignificant.
Michael Myers is our inability to understand the true evils of man.
Freddy Krueger is the fear of the helplessness of being asleep.
Five Nights at Freddy's is claustrophobia, fear of Technology, The Uncanny Valley, and general helplessness.
I can go on and on and on but to get to the point. while werewolves had that hook too, (our fear of being attacked by animals) in today's society it's a fear that we don't have as frequently as the others.
Although it's not as bad as mummies
Zombies also prey on the uncanny valley. One of the theories why we get unnerved by things that look almost human but not quite, or even people with one too many plastic surgeries like Real Barbie, is we know what a healthy human should look like. So when we see otherwise were try to avoid it for health reasons. Add the fact that the inevitable damage done by decay, insect and other scavenger activity, or even battle damage, and we know what that would translate on a human person.
The vampire I think has an edge in that like a serial killer, you can't really tell them apart from another human being (Nightflyer and Orloc aside) until its too late. How many people couldn't beleive John Wayne Gasy, or any number of other prolific killers did what they did because they knew them...they were their friends, their family.
With the werewolf, you are dealing with the beastly nature that people in a civilized society are suppose to reject.
Depending if they are in control of their bloodlust or not, is another factor. Lets use Skyrim as an example. In one Daedric Quest, you meet a man in prison. He was trying to find a way to control his werewolfism, unfortunately it has gotten so out of control the sight of a sickly little girl compelled his transformation and he attacked her. Because wolves, like any sane hunting animal, prefer to go after prey that can't hurt them or hurt them alot.
Compare this to your transformation. You tearing through a bandit camp like they are gift wrap on a birthday present is fun. Being the one on the other side of that, less so. Same concept as Predator: the biggest badassess are little more than trophies to go back to your triphy room to impress chicks with. Its one of the big things that made Predator work. Arni had proven himself as an action star, and an 80's one at that. The fact that even with his brains and brawn, his crew is killed one by one, and he only wins by dumb luck says it all.
The same can work with the werewolf.
Or reversely, you are the werewolf. You have your wolf part under controle, its not a problem, but you are still hunted down by big bad wannabe werewolf hunters that have passed down their knowldedge from one generation to the next/