If you read closely (there's a link to a pdf + I saw another article from a different link), you'll see that the overwhelming "majority" are Democrats. Percentages and statistics are easily manipulated to produce misleading headlines.

Think about how an "average" is calculated. What is the average age of a group comprised of four 15-year olds and four 60-year olds? 37.5

Of what value is that number? 🤔

From what I've read, a still-scarily large number of Republicans believe the e******n w*s f********t.

Guess again. Read the Constitution. Wait, I'll quote it for you.

Article II, Section 4, United States Constitution - The President, Vice President and all civil officers of the United States, shall be removed from office on impeachment for, and conviction of, treason, bribery, or other high crimes and misdemeanors.

Impeachment only applies civil officers. As of noon, January 20th, President is no longer a Federal Officer. The earliest a trial could start is January 19th. Senate trial procedures require that the accused have adequate time to prepare a defense.

There is no law on the books which allows the Federal government to deny a past President his pension or Secret Service protection. It also can't be passed Constitutionally. Any such law would be a bill of attainder, and those are specifically forbidden in the Constitution.