Until any state actually prints the final ballots missing Trump, there is no standing in a legal suit. Before the ink is dry the AG will file a law suit directly to SCOTUS because of the time constraints.
A lawsuit that claims what, exactly?
There are no Presidential elections in the Constitution.
My guess, only a guess, is that printing no Trump allowed ballots at the last minute to help Dems would mean no time to contest.
Or, once contesting then little robed judges in the HI,CA,OR etc. district will delay and then demand Trump be off the ballot. Then delay in allowing appeal to higher court.
As election day nears, SCOTUS will be on recess and tending to the bedside of the ailing Ginsberg. As a weeping nation waits for updates on her health.