>>6636419I don't know all of them, but I'll do my best, counterclockwise from Red Skull on the left. Dr. Bolivar Trask, guy from the Kyln in GotG that took Quill's tape player, Thanos, Loki, Magneto, Ice Giant from Thor (?), I'm assuming the blue hand belongs to Yondu since he opened his beer with his arrow, the Mandarin, Mystique, Abomination, Apocalypse (?), some shirtless dude, Winter Soldier, Lizard, Stan Lee at the bar, not sure who ponytail is, Chituari, Ultron, Venom, the Collector, Nebula, Azazel, I don't know the blonde chick, the Destroyer, and I'm assuming the blue guy is a Kree.
Bonus!
Spider-Man's hand, Cap's shield, baby Groot, Thor's hammer, Iron Man's helmet and arc reactor, Deadpool's chimichanga, and Wolverine's claw marks on the center pillar.