that is not zombie fiction. what zombie fiction is depicting it like that?

the george romero stuff were about consumerism and brainless shoppers mindlessly spending on crap. the dead rising series (spoilers here) literally has the bad guy be a corporation and the us government and military are complacent in it (the corporation even has an actual cure for zombies but that doesnt make them money like their once a day doses)

also zombies are basically what humans are to animals. seemingly never getting tired and always slowly catching up to you

you forget the queer side of vampire left wing stories. which focus on horny lesbians rather than class issues.

Vampire fiction being leftwing tracks, but zombie fiction being rightwing doesn't seem as clear-cut. There's definitely a "finally I get to be a real man doing survival-stuff and justifiably kill humanoid beings with personal weapons" aspect to it that feels rightwing, but there's also all the anti-consumerist and anti-corporation themes that are common to zombie fiction.

That's one reading. Another reading is that vampires are bloodsucking foreigners using their exotic charms to tempt and corrupt innocent women into sinful acts. And if a foreign noble is a vampire, then it's justified for America the heroes to depose them. Plus, they found a novel way to weaponise Christianity.

What does that make Frankenstein?

I feel like I've seen a few zombie movies that are critiques of consumerism and unthinking conformist politics, which are not typically conservative themes.

But it's not my preferred genre so I haven't seen many.

I have never ever heard of anyone interpreting zombie fiction as right wing. Like, just look at Night of the Living Dead. Actually, is any zombie movie even marginally right-wing? Zombieland?

This sounds like something that was made up post-hoc because it sounds good. I have yet to run into a zombie story where they talk about how great traditional gender roles are, or a vampire story where they talk about taking control of the means of production. They are just stories. There is no reason that they need to be inherently political - much less to run along the particular political lines we have in society today.

We could even make the case that the opposite is true - the most common trope I know of in vampire stories is feeling sympathy for the vampire when they have their monologue about how hard vampiring is. And the most common trope in Zombie movies is that the people need to work together, be honest, and sacrifice for each other in order to overcome the hoard.