The timers are from a Ace2 addon that I can't remember.

The raid UI at the lower right is Grid (Ace2).

The other UI could be pitbull (Ace2).

The button UI could be Bongos although I prefer Bartender4 (Ace2).

Threatmeter looks to be KTM.

Lower right Damage Meter is Recount.

Hmm...and that looks like an interesting addon : XRaidStatus. Shows raid condition in one simple glance.

And this snapshot is missing Quartz (Ace2) which is a fav of everyone!