I don’t know of any previous Supreme Court actions, where they would have summarily just stopped actions happening in other courts.
People keep talking about Bush vs. Gore, but in that case, the Supreme Court consolidated a few other cases which had already been heard in other courts, relating to the recounts in Florida. So even with that analogy, the Supreme Court is going to wait and see what happens in these Trump cases in the lower courts, then consider appeals. They could take an expedited appeal, and bypass the appeals courts, but even if they did that, they would still have allowed the ongoing process to play out.
This is unprecedented—law fare used by the President to basically hamstring his main opponent. They need to intervene to save our electoral system and our free an fair elections, as they call them and to take the decision for who we get to vote for out of the hands of Biden’s hands, a corrupt DOJ’s hands, a partisan Judge’s hands and, mostly, stopping the decision on who we vote for out of the hands of 12 jurors who likley all, voted for Biden. They don’t get to pick my President.