I would rank them:
Moody
Wagner (safer than Johnson)
Johnson (great upside, but risky)
Garuba (defense over offense)
Giddey (like his upside, but defense will be a problem).
In general I think big playmakers are a great player type to stock up on but Giddey concerns me. It isn't just his defense but the fact that his shot is slow and funky. That can be said to an extent about Haliburton as well but Tyrese seems to have a better feel for how to get his shot off.
Personally I'm not big on Garuba. He's not a rim protector, he's not a playmaker, and despite the percentages, I don't believe in his shot. No matter how high level a defender you are, if you can't be a threat on offense you're not playable for large minutes. It's why Thybulle still isn't a starter despite being a complete savant on the defensive side of the floor.
Instead of Garuba and Giddey I'd add:
Sengun (depending on measurements)
Bouknight
And possibly Kuminga because I think he may drop, though he also scares me a bit.
As I said a few weeks back, I would love to see the Kings deal for a a pick in the late teens if Ziaire Williams is still on the board and end up with Jalen Johnson and Williams or even Sengun and Williams.
I wouldn't be upset if the pick is Moody or Wagner either though.