A House contingent election (This is probably the most likely of the bunch. It still will not happen.)
Eh, NE-2 isn't going to vote for Trump this year. Not that a one vote electoral college victory would be a good outcome either.
Provided Nebraska doesn't switch to winner-takes-all, which their governor still hasn't given up on.
He has. He's saying that he'll call a special session to do it "if it has the votes" so that mentally challenged people like Charlie Kirk will stop giving him crap over it.
Also, Maine legislative leaders have now released a statement that they will immediately retaliate if Nebraska acts, so a map in which Maine splits its EV and Nebraska doesn't isn't plausible. And if Maine voted for Trump statewide, he wins without it going the House in this scenario.
To go to the House this year, you likely need RFK winning states.