US president-elect Joe Biden will announce the first names chosen for his cabinet on Tuesday, the incoming White House chief of staff said  and is expecting a scaled-down inauguration celebration because of the risks of spreading coronavirus.

In a sign that his transition team is pressing ahead swiftly – despite Donald Trump’s failure to concede the election and ongoing attempts to thwart the transition process – Ron Klain said on Sunday that the appointments were moving at a faster pace than the previous two administrations.

“You’re going to see the first cabinet picks this Tuesday. But if you want to know what cabinet agencies they are, who’s going to be in those cabinet agencies, you’ll have to wait for the president-elect to say that himself on Tuesday,” he told ABC.

Antony Blinken, a career diplomat who served as No 2 at the state department and as deputy national security adviser in the Obama administration, was Biden’s most likely pick to be secretary of state, according to reports on Sunday night by the New York Times and Reuters.

It comes after Biden said on Thursday that he had already chosen his treasury secretary, hinting only that it is somebody who will be “accepted by all elements of the Democratic party”.

Klain said that while parts of the transition are moving at “record setting pace”, there are limits to what the Biden team can do while the current administration continues to attempt to block the transition, the impacts of which “escalate every day”.

He said Biden and vice-president-elect Kamala Harris are not getting access to intelligence briefings, coronavirus data or background checks for cabinet nominees and criticised US general services administration (GSA) administrator Emily Murphy, who has delayed ascertaining Biden’s win.

“The law only requires her to find who is the apparent victor of the election and I can’t imagine there’s any dispute that Joe Biden is the apparent winner of the presidential election.”