Perez Cover to Infinite Crisis 2
Okay... lets go:
From left to right, top row:
Anti-matter universe world of Qward, Uncle Sam, Captain Atom (silver outfit), modern day Aquaman, Psycho Pirate, Legion headquarters (classic version), Arion (classic version), Modern Age OMAC Cyborg, either The Demon or a 'Sword of the Atom' era Atom, a planet - possibly Oa
Pariah with hood up, Ralph and Sue Digby, Earth 2 Kal-L's ship, Harbinger and the Monitor, a red sky with shadow demons, Anti Matter wave approaching a planet, the death of Supergirl from Earth 1, Flash of Two Worlds, A Death in the Family, The Anti Monitor, J'Onn J'Onzz
First ever JLA/JSA Crossover, Deathstroke, Power Girl and Wildfire, Earth 1 Kal-El's ship, what might be Earth 3's Johnny Quick, Human Bomb and Damage (from Infinite Crisis 1), Doctor Light I, Superman's birthing matrix (Man of Steel Byrne reboot), Nightwing (old outfit)
Earth 1 or Modern Age Lex Luthor in battlesuit, hand at the beginning of time, Captain Marvel, Barry Allen's empty uniform, Max Lord killing Blue Beetle, Donna Troy, The Death of Superman, Guy Gardner
Darkseid, Parallax, Earth 2 Superman and Lois Lane entering Earth 3 Alexander Luthor's limbo with the Earth Prime Superboy (COIE 12), current Superboy as Lex Luthor's pawn (Insiders arc)
Lady Quark, Phantom Stranger, Artemis as Wonder Woman, Knightfall, Modern Age Brother I Satellite, Gentleman Ghost, Wonder Woman killing Max Lord.
Oh yeah, I'm DC's bitch alright.