First, let me throw this out there.
Anti-Trump Republicans to back vulnerable Democratic lawmakers in 2022 congressional raceshttps://www.yahoo.com/news/anti-trump-republicans-back-vulnerable-115315092.html
Greger, Coach potatoes, yes. Independents, yes. swing voters to a certain extent. Swing voters are the ones out of that bunch that actually vote. Who and why most of the time goes unknown. Unless they're actually angry at the party in power, then everyone knows why.
Presidential election and who independents, swing voters vote for is fairly easily to determine. They vote most of the time for the candidate they like as a person the most. This holds True with Biden over Trump, Trump over Clinton, Obama over Romney and McCain, Bush II over Kerry and Gore, Bill Clinton over Dole and Bush I, Bush I over Dukakis, Reagan over Mondale and Carter etc.
Swing voters went for all the winners, sometimes it was close, other times not so close. But going back, independents have for the most part gone to the candidate they liked best as a person.The more likable candidate.
Midterms are difficult to figure. There's no easy category or number to refer to to figure out how'll swing voters, independents, coach potatoes will vote. Although if one looks at the anger level, that usually works.