If Vance is president, the President is Peter Thiel

Speaker of the House Mike Johnson becomes VP.

No, P will select a new VP, to be confirmed by the Senate. What you’re thinking of is line of succession, so speaker gets top gig if both P and VP go to meet their maker in short succession.

Whomever he wants to pick, basically. There’s no clear succession process for the VP. "Whenever there is a vacancy in the office of the Vice President, the President shall nominate a Vice President who shall take office upon confirmation by a majority vote of both Houses of Congress."

Speaker of the House Moscow Mike Johnson is next in line as sucessor to VP

No. That’s the Presidential succession.

He nominates a new VP. Both houses of Congress must approve with 2/3 vote since normally VP is decided by voters.

The sofa.