Chess 921,600 under the name of 'Double Fischer Random' has been played for many years on the correspondence site 'Scheming Mind', and one five player tournament is taking place right now: https://www.schemingmind.com/home/minitournament.aspx?tournament_id=10878.
I played in a few tournaments some years ago, and it's true that some starting positions may significantly favour White (or even Black!) but I never found that to be much of a problem - in the end it's usually the stronger player who wins out.
See also this post from last year: https://www.chess.com/forum/view/chess-variants/has-asymmetrical-chess-960-ever-been-tried.
Chess 921,600

Yeah but just common sense tells you lmao with so many variations you're certainly going to have some that do cause one side to be not benefitted due the set of that game.
😂 I'd actually dig 4 player were there no point nor rating system tbhwy