Some of my thoughts are Baron Zemo for the box near Cap WW2, Dracula for the box near Blade, Mar-Vell or the Skrull Queen for the box near Captain Marvel and Ronan, Korina for the box near and Ægon and The Collector, for the boxes where the spiderman villains I would guess Sandman and Mysterio, and the X-Men section near magik... Shadowcat, Professor X, and LegionJubilee, and near cyclops, Havok and Vulcan. For the bottom right section might be the FF universe with SIlver Surfer, Galactus, and the FF.
Some of my guesses are Morbuis, Armin Zola, Mysterio, Hydroman, Nova, Mister Sinister, Ronin, a Kabam OC or Outlaw, Nick Fury, a new Captain Marvel, Silver Surfer and any other F4 character.
Nova for the New Warrior next to NT and DH, new Cap Marvel, Mysterio, Ronin between Hawkeye and BW, Elsa Bloodstone next to Blade, Kabam OC attached to Guillotine
Comments
Coming from Cyclops will be Havoc and Mr. Sinister.