Best Zombie / Undead Horrors?

I’m looking for the best Zombie flicks with realistic decay / rot. I’m a science major and can’t help but love the grit of accuracy. Doesn’t have to be a “serious” horror..movies like return of the living dead and the like are completely fine im just looking for those brilliant practical fx!

as a heads up I’ve seen:

Return of the living dead 1,2,3

Dead snow 1&2

Fulci’s Zombie & other undead projects.

Re-Animator 1,2,3

The Fog

28 days later, weeks later & years later

City of the living dead

Rec 2007

Night of the living dead

World war z

Train to busan

Dawn of the dead

Shaun of the dead

Dead alive

Resident evil(s)