Grados tend to be the recommended go-to can for metal around here, though I owned a pair of Alessandro MS1s (identical design to Grados, just made in collaboration with Alessandro) and I couldn't stand them... not because of the sound (they definitely sounded good), but because of the comfort; I couldn't wear them for any longer than half an hour at a time and ended up selling them after only a week. I tried washing the pads and rolling them in my hands for a long time but nothing worked, the fact that their pads are called "comfies" is the most ironic thing I've ever heard. If you're in to masochism, I'd fully recommend them.
Anyway, as for the other cans, I can't comment on most of them. You'll likely find the HD205 to be very sub-par when compared to other headphones like the M50, I owned them and they had a nice sound but they couldn't compete with even my V6 which only cost about half as much as the M50 which you also stated interest in. FWIR the K240 are unimpressive compared to the K271 but both are apparently fairly light on the bass and not suited to metal. The ES7s are apparently a very fun can to listen to, though I've not heard how they perform with metal, if they're anything like the ES9 then from what I've read about they wouldn't be an ideal choice for metal. Lastly, the M50 is a highly recommended headphone around here which is, FWIR, a great all-rounder, I'd put them at the top of your list with the Grados.
Be aware, the only headphone I've listened to in the second paragraph is the HD205, the rest is all FWIR (from what I've read) on this site and may or may not be accurate.