Killer list! Saves me from having to post my recommendations.

I actually like comedy horror movies so have to incorporate them

Me too, it can be tricky to juggle that and provide scares but Cabin in the Woods nails it. Shaun of the Dead, Evil Dead 2, Peter Jackson's Braindead, Tremors and both Zombielands are also worthy contenders.

Malignant - topped my list immediately. It’s batshit. Absolutely insane. If you don’t like James Wans’ typical output you’ll love this. It was obviously his whatever-the-fuck-i-want movie and it. Is. Awesome.

It seemed to fly under the radar, unlike Barbarian, a bit but is fantastic.

In that category Cobweb could work. It's a Marmite film and you need to suspend disbelief but it worked for me and the audience I saw it with.

Amongst slightly older films The Mist, Cube, Timecrimes and From Dusk Till Dawn (just the first one) are still solid.

And with classics... you can never go wrong with The Thing and I know it's recommended every single time but there's a reason for that.