The only people here I can't see doing this is Wonder Woman, Blue Marvel (he probably could, unsure) and thats basically it. The rest does it and some do it easily.
I'm gonna look at some feats some of the characters have performed, try to make sense out of it and gauge who could pull it off. I'll only be looking at high end feats and compare those to the task to lift the Earth. Obviously every single character on the list (including Superman) has some nonsensical low showing, which would make lifting the weight of the Earth very questionable.
Hercules can. He has lifted the heavens before, which are heavier than a planet I'd think.
Sentry can. He is the Sentry.
Thor possibly can?
He overpowered the Midgard Serpent, who was as big as the Earth and crushing it. I put strength above weight, considering how a 200 pound person does not max out at lifting 200 weights. That person could potentially double / quadruple the weight, depending on the lift (benchpress, squat, deadlift). So it's more impressive to overpower something above planetary in strength than lifting something planetary in weight.
Thor also didn't simply die away, when he was being crushed by the weight of 20 planets. He couldn't push back, but he was fine afterwards. You can lift 10 pounds all day, but when you multiply that by 20, you won't have such an easy time. And if x15 is your one rep max, every other x1 feels like an impossible task.
Gladiator possibly can?
Gladiator does not have many lifting feats, does he? But all the other feats he has are top notch. Punching a planet apart, which survived the death of galaxies, crossing galaxies within the blink of an eye, chilling through red giants. I just don't see Gladiator failing to accomplish that feat, if he has to.
Hulk can. He was still "only" on his knees and hands, when the weight of a star was pushing him down. If you can avoid being turned into a pancake by that weight, then you can handle the weight of the Earth just fine.
It's also a massive endurance feat, just to point out. Can the other characters do it whilst cut off from their source of power (if possible) for five days straight?
For 5 days??? Maybe a sufficiently enraged Hulk? Lol @ Thor doing it .
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Gladiator can maintain his confidence levels for 5 days straight? Scans.
Hulk can maintain his anger levels sufficient to bench Earth's mass for 5 days? Scans. And yes, I went through ODG's respect thread BEFORE I asked this question, so no need to repeat anything you find there
No one here except WBH has the feats to prove that they can even lift it once.
Even if you miraculously prove that someone can lift it once then you would be hard pressed to prove they can lift it over 100,000 times (5 days of lifting).
I could bench 185lb easily but can't do it more than 20 times. See the difference?