If you’re gonna mention the Marvel Family, then I have to throw in Black Adam as the best. Bad-ass lightning bolt on black. Nothing else is needed or wanted. It’s perfect because it sums up his powers AND says “I’m a villain” all in one. (As long as they make him a REAL bad guy again and drop all of this “I had a family and they died” crap. Let a bad guy just BE BAD! Sorry, personal annoyance.)
The Ultimate Thor. They made those circles on his chest actually look cool.
Jack Hawksmoor of the Authority. Casual, yet stylish.
Firestorm always looked pretty good.