Here's a name that nobody mentioned (Public Board)
I'm a real fan of Ron Johnson. He really investigates whatever issue he is involved in and isn't afraid to challenge those involved. He ran the Covid 19 Second Opinion panel in 2022 that challenged the government's response to Covid-19. I don't know if you ever saw any of that. It was 6 hours long. I watched a couple of hours of it and it was very compelling in so many ways.
I'd hate to lose him in the Senate. He's very effective there.