All the really great light sounding guitars I’ve played seemed to all have either strat or p90 pickups, not metal/hard rock style guitars. That’s kinda the problem because we need a punchy, ballsy sound for metal that usually gets compromised with lighter guitars. That being said I agree that some sort of SG may be the way to go. If you’re on a budget some of those Japanese brand one I’ve tried have been great for the price, IMO better than any SG I’ve tried in Gibson’s US line (not Custom Shop or vintage though of course). I forgot which brand it was (I get em mixed up) because this one friend of mine collects so many of those various Japanese Gibson knock offs and this one SG he had was particularly good. I think it was either Orville or Edwards, but can’t remember 100%. He also had a whole bunch of Navigators that were even better, but I think those have gotten pricy
I had a Suhr Modern Satin in red and remember it being decent (better even than some of other more expensive Suhr’s I tried), but nothing amazing or enough to warrant keeping around for me, but maybe a solid choice it it’s gotta be light. I wasn’t too impressed with the Skervesen Raptor I had, but that was years ago and have heard they’ve gotten better lately. I don’t remember it though being particularly light though
Some of the Knaggs Honga’s can also be on the lighter side and are nice guitars, but not cheap. I think those may have also been going for an SG vibe. They actually may be my favorite of the Knaggs models