No particular direct swaps:-
Miss Victory;
The Hood;
Black Terror ( for a bit of pure, unsubtle power);
The Ray;
Magno (and Davey);
The Web;
Blue Beetle.
And to be different, A non N. American suggestion:-
Asso di Picche ( Ace of Spades - the Hugo Pratt Masked man);
Ace Hart ( flight, strength, Ray gun, atomic energy);
Mister X (John Smith, the Italian superhero with the atomic ray in his belt and the 2nd. Italian hero after Asso di Picche, I think);
Mr. X The British masked hero from The Dandy, 1944 - Len Manners, private eye;
El Encapuchado ( Spanish hero from pulps and comics and a great way to shoehorn in a hood just like that worn by The Hood);
Electro Girl (British heroine from the'40's with, strangely enough, electrical powers);
Captain Atom ( the Australian Hero whose title outsold Superman in Oz. for a while)
This is great fun. Already making a further alternative list. Keep them coming.