Well I'll suggest some of the old BOOMER shit, since you have mostly new stuff listed.
Dawn of the Dead (1978) I like the remake better though
Zombie (1979) Sort of slower paced and not a favorite, but has some gory bits and a zombie fighting a shark at one point. Italian made, so you might find it under the title "Zombi 2" (It's a long story)
City of the Walking Dead (1980) AKA Nightmare City. Technically not zombies since they're known as the "contaminated". The zombies range from looking almost human still with a few scars to their heads looking like moldy potatoes. It's one of those lower budget Italian movies.
I bring this one up since it's got some rather lively "zombies" in it that are running around shooting people with machine guns at one point. They tend to drink blood rather than eat the whole body though.
Burial Ground (1981) AKA Nights of Terror. Yep, another slower pace Italian one, but this one has some weird shit going on (I won't spoil it) independent of the zombies which are all properly rotten and moldy looking. Some gory bits.
Day of the Dead (1985) Sort of flawed, but it's got some good gory bits
Return of the Living Dead (1985) Usually the better known "First intelligent fast zombies movie" (If you don't count Nightmare City) First one is the best one, though maybe check out 2 and 3, but don't bother with 4 and 5 since they suck a lot.
Reanimator (1985) Yep, 1985 was a good year back in the 80s for zombie movies. If you want a mad scientist addition to the zombies, here you go. Probably one of my favorite horror movies of all time. Still pretty gory even for today and has another infamous bit in it that puts it over the top.
Night of the Living Dead (1990) Probably the best remake of the movie, Honestly I like it better than the original.