OllyGolly
Apprentice
I picked Lagoon Boy because he could also wield the Trident, realistically. Amethyst could actually be similar to Wonder Woman, honestly. Just change Wonder Woman's hair color and change her sword's color to magenta. I thought Black Alice was associated with Black Adam at times, am I wrong?It's a cool list, and I agree with most of it, but in what world could you have those guys as alternates? Black Alice has an amazing power set that would just be wasted on being a Black Adam clone. Lagoon Boy is very little like Aquaman and while I admit Damian could play the same as Nightwing... he's a lot smaller, wouldn't it mess with Hitboxes.
The rest seem alright though, or I don't know enough about the character you listed.