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¯\_(ツ)_/¯ Crazy people gonna crazy. The first 2 are of no consequence, they're just random people without any meaningful influence. The third one, Evan McMullin, is actually someone more important https://en.m.wikipedia.org/wiki/Evan_McMullin Turns out he ran in the primary against Trump in 2016. Strong mormon ties, started a PAC with Romney, appears to be the "heir" to Romney's Senate seat. My guess is he's just trying to get publicity here to get his name out for a 2024 run. Currently he runs a never Trump conservatives group, in the style of the Lincoln Project. I wouldn't worry too much about him either. Though I do think we should shame elected officials who push conspiracy theories and legal battles to Trump overturning the election, even if it doesn't happen.
It's him, looked it up on Twitter myself. The blue checkmark after his name means it's a "verified" person which is given to public figures. The message in question is on his verified account
The first is from a Brit, and is clearly meant as a humorous take on the Trump Accountability Project. You could have screen-capped his (zhis ) later tweet talking about "special Biden-Harris re-education facilities." That would have been more effective in evoking a "scary leftist" narrative. The second is chiming in with McMullin. McMullin is playing his own game, as GeneWright correctly observed. People who care will remember those like Gingrich and Hannity who've been actively agitating to thwart the democratic process, regardless of McMullin's yapping.